]> git.mjollnir.org Git - moodle.git/commitdiff
The new domxml validation library (need php domxml ext to work)
authorbobopinna <bobopinna>
Mon, 19 Jul 2004 14:56:25 +0000 (14:56 +0000)
committerbobopinna <bobopinna>
Mon, 19 Jul 2004 14:56:25 +0000 (14:56 +0000)
mod/scorm/validatordomxml.php [new file with mode: 0755]

diff --git a/mod/scorm/validatordomxml.php b/mod/scorm/validatordomxml.php
new file mode 100755 (executable)
index 0000000..54c4ad2
--- /dev/null
@@ -0,0 +1,2474 @@
+<?php
+
+define("01", "useCurrentAttemptObjectiveInfo");
+define("02", "useCurrentAttemptProgressInfo");
+
+$cont_err = 0; //contatore per il numero di eventuali errori
+$errors = array(); //array degli errori
+$item_idref_array = array(); //array degli attr. idRef di <item>
+$idres_array = array(); //array degli attr. id di <resource>
+$def_org_array = array(); 
+$id_org_array = array();
+
+function is_spec($stringa)
+{
+        return($stringa == "\n" | $stringa == "\r" | $stringa == "\t" |
+                $stringa == " " | $stringa == "\0" | $stringa == "\x0B"|
+                $stringa == "");
+}
+                                                                                                                            
+// Funzione che ritorna i valori validi per il tag <timeLimitAction>
+                                                                                                                            
+function is_message($str)
+{
+        return($str == "exit,message" | $str = "exit,no message" | $str == "continue,message" |
+                $str == "continue,no message");
+}
+
+function is_cond_val($st)
+{
+       return($st == "satisfied" | $st == "objectiveStatusKnown" | $st == "objectiveMeasureKnown" |
+              $st == "objectiveMeasureGreaterThan" | $st == "objectiveMeasureLessThan" |
+              $st == "completed" | $st =="activityProgressKnown" | $st == "attempted" |
+              $st == "attemptLimitExceeded" | $st == "timeLimitExceeded" | $st == "always" |
+              $st == "outsideAvailableTimeRange"); 
+}
+
+function is_action1($str1)
+{
+       return($str1 == "skip" | $str1 == "disabled" | $str1 == "hiddenFromChoice" | $str1 == "stopForwardTraversal");
+}
+
+function is_action2($str2)
+{
+       return($str2 == "exitParent" | $str2 == "exitAll" | $str2 == "retry" | $str2 == "retryAll" |
+              $str2 == "continue" | $str2 == "previous");
+}
+
+function is_rcond_val($st1)
+{
+       return($st1 == "satisfied" | $st1 == "objectiveStatusKnown" | $st1 == "objectiveMeasureKnown" |
+              $st1 == "completed" | $st1 =="activityProgressKnown" | $st1 == "attempted" |
+              $st1 == "attemptLimitExceeded" | $st1 == "timeLimitExceeded" | $st1 == "outsideAvailableTimeRange");
+}
+
+function is_rolAc_val($str3)
+{
+       return($str3 == "satisfied" | $str3 == "notSatisfied" | $str3 == "completed" | $str3 == "incomplete");
+}
+
+function is_randT_attr($str4)
+{
+       return($str4 == "never" | $str4 == "once" | $str4 == "onEachNewAttempt");
+}
+
+function is_rolCo_val($str5)
+{
+       return($str5 == "always" | $str5 == "ifAttempted" | $str5 == "ifNotSkipped" | $str5 == "ifNotSuspended");
+}
+
+function is_hch_cont($str6)
+{
+       return($str6 == "previous" | $str6 == "continue" | $str6 == "exit" | $str6 == "abandon");
+}
+
+/* Funzione che testa l'elemento root dell'albero DOM generato */
+
+function testRoot($DomNode)
+{
+       global $errors;
+       global $cont_err;
+       $error = NULL;
+       
+       if(($DomNode->node_type() == "1")&&($DomNode->tagname() == "manifest"))
+       {
+               if(!$DomNode->has_attributes())
+               {
+                       $error->type = "no_attributes";
+                       $error->data->tag = "manifest";
+                       array_push($errors, $error);
+                       $cont_err++;
+               }
+               $attr_array = $DomNode->attributes();
+               $attr_n = $attr_array[0]->node_name();
+               if($DomNode->has_attribute("identifier"))
+               {
+                   if((strcmp("identifier", $attr_n)!=0)||($attr_array[0]->node_value() == ""))
+                   {
+                       $error->type = "attr_error";
+                        $error->data->tag = "manifest";
+                       $error->data->attr = $attr_n;
+                       array_push($errors, $error);
+                       $cont_err++;
+                   }
+               } else {
+                       $error->type = "missing_attribute";
+                       $error->data->tag = "manifest";
+                       $error->data->attr = 'identifier';
+                       array_push($errors, $error);
+                       $cont_err++;
+               }
+               
+               if($DomNode->has_attribute("version"))
+               {
+                       $version = $attr_array[1]->node_value();        
+                       if(!eregi("[1-9]\.[0-9]", $version))
+                       {
+                               $error->type = "attr_error";
+                               $error->data->tag = "manifest";
+                               $error->data->attr = 'version';
+                               array_push($errors, $error);
+                               $cont_err++;                            
+                       }
+               } else {
+                       $error->type = "missing_attribute";
+                       $error->data->tag = "manifest";
+                       $error->data->attr = 'version';
+                       array_push($errors, $error);
+                       $cont_err++;
+               }
+               if(count($errors) > 0)
+               {
+                  return false;
+               }
+               else {
+                  return true;
+               }
+       }
+       return false;
+}
+
+/* funzione che scorre l'albero DOM e valida il documento*/
+function testNode($DomNode)
+{
+  global $cont_err; //gli array devono essere dichiarati globali
+  global $errors;
+  global $item_idref_array;
+  global $idres_array;
+  global $def_org_array;
+  global $id_org_array;
+  $error = NULL;
+  $version_value = NULL;
+  $schema_version = NULL;
+
+  if($figlio = $DomNode->first_child())
+  {
+       while($figlio)
+       {
+               if($figlio->node_type() == "1")
+               {
+                       //valore booleano che viene restituito dalla funzione se e' tutto corretto              
+                       
+                       $nome_figlio = $figlio->node_name();
+                       $padre = $figlio->parent_node();
+                       $pp = $padre->parent_node();
+                       
+                       if($nome_figlio == "metadata")
+                       {
+                         if($figlio->has_attributes())
+                          {
+                           $error->type = "too_many_attributes";
+                           $error->data->tag = "metadata";
+                           array_push($errors, $error);
+                           $cont_err++;
+                          }
+                                                                                                                         
+                          $mdata_children = $figlio->child_nodes(); //array dei figli
+                          // Il metodo count conta il numero di elementi dell'array e ritorna il numero
+                          $tot_children = count($mdata_children);  
+
+                         if($padre->node_name() == "manifest")
+                         {
+                               //Si controlla se il tag metadata ha i figli <schema> e <schemaversion>
+                               //che devono essere SEMPRE presenti all'interno del manifest.
+                               $test_sc = $tot_children;
+                                $test_scv = $tot_children;
+                               for($i = 0; $i < $tot_children; $i++)
+                               {
+                                 $cur_child = $mdata_children[$i];
+                                 if($cur_child->node_name()!="schema")
+                                 {
+                                       $test_sc--;
+                                 }
+                                 if($cur_child->node_name() != "schemaversion")
+                                 {
+                                       $test_scv--;
+                                 } else {
+                                   $schema_version = $cur_child->node_value();
+                                 }
+                               }
+                               
+                               if(!eregi("(CAM[[:blank:]])?[1]\.[3]", $schema_version))
+                                {
+                                  if($figlio->has_child_nodes())
+                                 {
+                                   $error->type = "too_many_children";
+                                   $error->data->tag = "metadata";
+                                   array_push($errors, $error);
+                                 }
+                               } else {
+                                 if(!$figlio->has_child_nodes())
+                                 {
+                                   $error->type = "no_children";
+                                   $error->data->tag = "metadata";
+                                   array_push($errors, $error);
+                                 }
+                               
+                                 if($test_sc <= 0)
+                                  {
+                                   $error->type = "missing_tag";
+                                   $error->data->tag = "schema";
+                                   array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                                 if($test_scv <= 0)
+                                 {
+                                   $error->type = "missing_tag";
+                                    $error->data->tag = "schemaversion";
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                                }
+                                
+                         }
+                         //METADATA puo'comparire anche come figlio di altri nodi
+
+                         if($padre->node_name() != "manifest")
+                         {
+                           $t_sc = $tot_children;
+                            $t_scv = $tot_children;
+                            $new_t_sc = 0;
+                            $new_t_scv = 0;
+                           for($i = 0; $i < $tot_children; $i++)
+                            {
+                              $cc = $mdata_children[$i];
+                              
+                              if($cc->node_name()=="schema")
+                              {
+                                $new_t_sc = $t_sc-1;
+                              }
+                              if($cc->node_name() == "schemaversion")
+                              {
+                                $new_t_scv = $t_scv-1;
+                                $schema_version = $cc->node_value();
+                              } 
+                              
+                            }//fine FOR
+
+                           if(eregi("(CAM[[:blank:]])?[1]\.[3]", $schema_version))
+                           {
+                               if($new_t_sc < $t_sc)
+                               {
+                                 $error->type = "too_many_children";
+                                  $error->data->tag = "metadata";
+                                  array_push($errors, $error);
+                                  //echo "WARNING, se il tag metadata non e' figlio di manifest non deve avere schema
+                                  //      come figlio <br>";
+                                //echo "Probabilmente la versione e' antecedente alla 1.3 <br>";
+                               }
+                               if($new_t_scv < $t_scv)
+                                {
+                                  $error->type = "too_many_children";
+                                  $error->data->tag = "metadata";
+                                  array_push($errors, $error);
+                                  //echo "WARNING, se il tag metadata non e' figlio di manifest, non deve avere schemaversion
+                                  //      come figlio <br>";
+                                 //echo "Probabilmente la versione e' antecedente alla 1.3 <br>";
+                                }
+                            }
+                         }     
+                        // echo "SCANSIONE TAG METADATA TERMINATA, OK \n";             
+                       }// FINE IF METADATA
+                       
+                       if($nome_figlio == "schema")
+                       {
+                         if($padre->node_name() != "metadata")
+                         {
+                               $error->type = "position_error";
+                               $error->data->tag = "schema";
+                               $error->data->parent = $padre->node_name();
+                               array_push($errors, $error);
+                               //echo "ERROR, schema puo'comparire solo come figlio di metadata";
+                               $cont_err++;
+                         }
+                         if(!$figlio->has_child_nodes())
+                         {
+                               $error->type = "no_children";
+                               $error->data->tag = "schema";
+                               array_push($errors, $error);
+                               $cont_err++;
+                         }
+                         $sc = $figlio->first_child();
+                          if(($sc->node_type() == 3)&&(strcmp($sc->node_value(), "ADL SCORM")!=0))
+                          {
+                               $error->type = "tag_error";
+                               $error->data->tag = "schema";
+                               $error->data->value = $sc->node_value();
+                               array_push($errors, $error);
+                               $cont_err++;
+                          }
+                         
+                       }
+
+                       if($nome_figlio == "schemaversion")
+                       {
+                         if($padre->node_name() != "metadata")
+                         {
+                               $error->type = "position_error";
+                                $error->data->tag = "schemaversion";
+                               $error->data->parent = $padre->node_name();
+                               array_push($errors, $error);
+                               $cont_err++;
+                         }
+                         if(!$figlio->has_child_nodes())
+                          {
+                               $error->type = "no_children";
+                                $error->data->tag = "schema";
+                               array_push($errors, $error);
+                               $cont_err++;
+                          }
+                         $svc = $figlio->first_child();
+                         
+                         $version_value = $svc->node_value();
+                          if(($svc->node_type() == 3)&&(!eregi("(CAM[[:blank:]])?[1]\.[0-3]",$svc->node_value())))
+                         {
+                               $version_value = $svc->node_value();
+                               if(eregi("[1]\.[0-3]", $version_value))
+                               {
+                                 echo "Versione=",$version_value;
+                               } else {
+                                 $error->type = "tag_error";
+                                 $error->data->tag = "schemaversion";
+                                 $error->data->value = $version_value;
+                                 array_push($errors, $error);
+                               }
+                          }
+                         
+                       }
+
+                       if($nome_figlio == "location")
+                       {
+                         if(strcmp("metadata", $padre->node_name())!=0)
+                          {
+                               $error->type = "position_error";
+                                $error->data->tag = "location";
+                               $error->data->parent = $padre->node_name();
+                               array_push($errors, $error);    
+                               $cont_err++;
+                          }
+                         if(!$figlio->has_child_nodes())
+                          {
+                               $error->type = "no_children";
+                                $error->data->tag = "location";
+                               array_push($errors, $error);
+                               $cont_err++;
+                          }
+                         else
+                         {     
+                            $loc = $figlio->first_child();
+                            if(($loc->node_type() == 3)&&(!eregi("[[:print:]]\.[a-z]",$loc->node_value())))
+                            {
+                               $error->type = "tag_error";
+                                $error->data->tag = "location";
+                               $error->data->value = $loc->node_value();
+                               array_push($errors, $error);
+                               $cont_err++;
+                            } 
+                         }          
+                         //echo "<br> SCANSIONE DI LOCATION TERMINATA, OK \n";
+                       }
+
+                       if($nome_figlio == "organizations")
+                       {
+                               if($padre->node_name() != "manifest")
+                               {
+                                 $error->type = "position_error";
+                                  $error->data->tag = "organizations";
+                                 $error->data->parent = $padre->node_name();
+                                 array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                               if(!eregi("(CAM[[:blank:]])?[1]\.[3]", $version_value))
+                               {
+                                 if($figlio->has_attribute("default"))
+                                  {
+                                     $orgs_attr_old = $figlio->attributes();
+                                     $defv_old = $orgs_attr_old[0]->node_value();
+                                     if(!eregi("[[:graph:]]", $defv_old))
+                                     {
+                                        $error->type = "attr_error";
+                                        $error->data->tag = "organizations";
+                                        $error->data->attr = "default";
+                                        array_push($errors, $error);
+                                        $cont_err++;
+                                     }
+                                  }
+                               } else {
+                                  if((!$figlio->has_attributes())||(!$figlio->has_attribute("default")))
+                                  {
+                                     $error->type = "missing_attribute";
+                                     $error->data->tag = "organizations";
+                                     $error->data->attr = "default";
+                                     array_push($errors, $error);
+                                     $cont_err++;
+                                  }
+                                  $orgs_attr = $figlio->attributes();
+                                  if($orgs_attr[0]->node_value() != "")
+                                  {
+                                     $def_v = $orgs_attr[0]->node_value();
+                                     array_push($def_org_array, $def_v);
+                                  }
+  
+                                  if(!$figlio->has_child_nodes())
+                                  {
+                                     $error->type = "no_children";
+                                      $error->data->tag = "organizations";
+                                     array_push($errors, $error); 
+                                     $cont_err++;
+                                  }
+
+                                  $orgs_children = $figlio->child_nodes();
+                                   $cont_orgs = count($orgs_children);
+                                                                                                                            
+                                   for($k=0; $k < $cont_orgs; $k++)
+                                   {
+                                      $co = $orgs_children[$k];
+                                     $test1 = $cont_orgs;
+                                     if(($co->node_type() != 1)&&($co->node_name() != "organization"))
+                                     {
+                                        $test1--;
+                                     }
+                                  }
+       
+                                  if($test1 <= 0)
+                                   {
+                                     $error->type = "missing_tag";
+                                     $error->data->tag = "organizations";
+                                     array_push($errors, $error);
+                                     $cont_err++;
+                                   }
+                                }
+       
+                               //echo "SCANSIONE TAG ORGANIZATIONS TERMINATA, OK \n";
+                       }//FINE IF ORGANIZATIONS
+
+                       if($nome_figlio == "organization")
+                       {
+                               if($padre->node_name() != "organizations")
+                               {
+                                 $error->type = "position_error";
+                                  $error->data->tag = "organization";
+                                 $error->data->parent = $padre->node_name();
+                                 array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                       
+                               if(!$figlio->has_attributes())
+                                {
+                                 $error->type = "no_attributes";
+                                 $error->data->tag = "organization";
+                                 array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                                $org_attr = $figlio->attributes();
+                               $cont_org = count($org_attr);
+                               if($cont_org > 3)
+                               {
+                                 $error->type = "too_many_attributes";
+                                 $error->data->tag = "organization";
+                                 array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                                $org_id = $org_attr[0]->node_name();
+                                $org_val = $org_attr[0]->node_value();
+                                if(($org_id != "identifier")||(!eregi("[[:graph:]]", $org_val)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = "organization";
+                                 $error->data->attr = $org_id;
+                                 array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                               else {
+                                  array_push($id_org_array, $org_val); 
+                               }
+                               
+                               if($figlio->has_attribute("structure"))
+                                {
+                                  if($org_attr[1]->node_value() == "")
+                                 {
+                                       $error->type = "tag_error";
+                                       $error->data->tag = "organization";
+                                       array_push($errors, $error);
+                                       $cont_err++;
+                                 }
+                                }
+
+                               if($figlio->has_attribute("adlseq:objectivesGlobalToSystem"))
+                               {
+                                 $ot_n = $org_attr[2]->node_name();
+                                 $ot_val = $org_attr[2]->node_value();
+                                 if(eregi("^$", $ot_val))
+                                 {     
+                                       $error->type = "attrError";
+                                       $error->data->tag = "organization";
+                                       $error->data->attr = $ot_n;
+                                       array_push($errors, $error);
+                                       $cont_err++;
+                                 }
+                                 if(!((strcmp("true", $ot_val)==0)||(strcmp("false", $ot_val)==0)))
+                                 {
+                                       $error->type = "attr_error";
+                                        $error->data->tag = "organization";
+                                        $error->data->attr = $ot_n;
+                                        array_push($errors, $error);
+                                       $cont_err++;
+                                 }
+                               }
+                                                                                                                            
+                                if(!$figlio->has_child_nodes())
+                                {
+                                 $error->type = "no_children";
+                                  $error->data->tag = "organization";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+
+                               $org_children = $figlio->child_nodes();
+                               $org_cont = count($org_children);
+                               for($j=0; $j < $org_cont; $j++)
+                               {                               
+                                 $of = $org_children[$j]->node_name();
+                                 $test2 = $org_cont;
+                                 if($of != "title")
+                                 {
+                                   $test2--;
+                                 }
+                               }
+                               if($test2 <= 0)
+                                {
+                                 $error->type = "missing_tag";
+                                  $error->data->tag = "title";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+
+                               //echo "SCANSIONE TAG ORGANIZATION TERMINATA, OK \n";
+                       }//FINE IF ORGANIZATION                         
+                        
+                       if($nome_figlio == "item")
+                       {
+                               if(!((strcmp("organization", $padre->node_name())==0)||
+                                    (strcmp("title", $padre->node_name())==0)||
+                                    (strcmp("item", $padre->node_name())==0)))
+                               {
+                                 $error->type = "position_error";
+                                  $error->data->tag = "item";
+                                 $error->data->parent = $padre->node_name();
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                               if(!$figlio->has_attributes())
+                               {
+                                 $error->type = "no_attributes";
+                                  $error->data->tag = "item";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                               $item_attr = $figlio->attributes();
+                               $cont_attr2 = count($item_attr);
+                               for($i=0; $i < $cont_attr2; $i++)
+                               {
+                                 $ia = $item_attr[$i];
+                                 if(!$figlio->has_attribute("identifier"))
+                                 {
+                                   echo "ERROR, manca l'attributo ID";
+                                   $cont_err++;
+                                 }
+                                 elseif($ia->node_name()=="identifier")
+                                 {
+                                   $item_id = $ia->node_name();
+                                    $item_id_val = $ia->node_value();
+                                   if($item_id_val == "")
+                                   {
+                                     $error->type = "attr_error";
+                                      $error->data->tag = "item";
+                                      $error->data->attr = $item_id;
+                                      array_push($errors, $error);
+                                     $cont_err++;
+                                   }
+                                 }
+       
+                                 if(($figlio->has_attribute("identifierref"))&&($ia->node_name()=="identifierref"))
+                                 {
+                                   $id_ref_val = $ia->node_value();
+                                   if(eregi("[[:graph:]]", $id_ref_val))
+                                   {
+                                     array_push($item_idref_array, $id_ref_val);
+                                   }
+                                   else
+                                   {
+                                     $error->type = "attr_error";
+                                      $error->data->tag = "item";
+                                     $error->data->attr = "identifierref";
+                                      array_push($errors, $error);
+                                     $cont_err++;
+                                   }
+                                 }                              
+
+                                 if(($figlio->has_attribute("isvisible"))&&($ia->node_name()=="isvisible"))
+                                 {
+                                   $isv_n = $ia->node_name();
+                                   $isv_val = $ia->node_value();
+                                   if(!((strcmp("true", $isv_val)==0)||(strcmp("false", $isv_val)==0))) 
+                                   {
+                                      $error->type = "attr_error";
+                                       $error->data->tag = "item";
+                                       $error->data->attr = $isv_n;
+                                       array_push($errors, $error);
+                                      $cont_err++;
+                                   }
+                                 }
+       
+                                 if(($figlio->has_attribute("parameters"))&&($ia->node_name()=="parameters"))
+                                 {
+                                   $par_n = $ia->node_name();
+                                   $par_val = $ia->node_value();
+                                   if(($par_val == "")||($par_val == " "))
+                                   {
+                                       $error->type = "attr_error";
+                                        $error->data->tag = "item";
+                                        $error->data->attr = $par_n;
+                                        array_push($errors, $error);
+                                       $cont_err++;
+                                   }
+                                 }
+                               }//FINE FOR
+
+                               if(!$figlio->has_child_nodes())
+                               {                               
+                                 $error->type = "no_children";
+                                  $error->data->tag = "item";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+
+                               $item_children = $figlio->child_nodes();
+                               $cont_ic = count($item_children);
+                               for($c=0; $c < $cont_ic; $c++)
+                               {                       
+                                 $ic_n = $item_children[$c];
+                                 $test3 = $cont_ic;
+                                 if($ic_n->node_name() != "title")
+                                 {
+                                   $test3--;
+                                 }
+                               }
+                               if($test3 <= 0)
+                                {
+                                 $error->type = "missing_tag";
+                                  $error->data->tag = "title";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }              
+                       }//FINE IF ITEM
+
+                       if($nome_figlio == "title")
+                       {
+                         if($figlio->get_content() == "")
+                         {
+                               $error->type = "tag_error";
+                                $error->data->tag = "title";
+                                array_push($errors, $error);
+                               $cont_err++;
+                         }
+                       }
+
+                       if($nome_figlio == "timeLimitAction")
+                       {
+                         if($padre->node_name() != "item")
+                         {
+                           $error->type = "position_error";
+                           $error->data->tag = "timeLimitAction";
+                           $error->data->parent = $padre->node_name();
+                           array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if($pp->node_name() != "item")
+                         {
+                           $error->type = "position_error";
+                           $error->data->tag = "timeLimitAction";
+                           $error->data->parent = $padre->node_name();
+                           array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if(($figlio->get_content() == "")||(!is_message($figlio->get_content())))
+                         {
+                           $error->type = "tag_error";
+                           $error->data->tag = "timeLimitAction";
+                           $error->data->value = $figlio->get_content();
+                           array_push($errors, $error);
+                           $cont_err++;
+                         }
+                       }       
+                       
+                       if($nome_figlio == "dataFromLMS")
+                       {       
+                         if($padre->node_name() != "item")
+                          {
+                           $error->type = "position_error";
+                           $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                           array_push($errors, $error);
+                           $cont_err++;
+                          }
+                          if($pp->node_name() != "item")
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                           array_push($errors, $error);
+                           $cont_err++;
+                          }
+                       }
+
+                       //Il tag prerequisites e' presente solo nelle versioni precedenti alla 1.3
+
+                       if(($nome_figlio == "prerequisites")&&(eregi("(CAM[[:blank:]])?[1]\.[0-2]", $version_value)))
+                       {
+                         if(strcmp("item", $padre->node_name())!=0)
+                         {
+                               $error->type = "position_error";
+                               $error->data->tag = "$nome_figlio";
+                               $error->data->parent = $padre->node_name();
+                               array_push($errors);
+                               $cont_err++;
+                         }             
+                         if(!$figlio->has_attributes())
+                         {
+                               $error->type = "no_attributes";
+                               $error->data->tag = $nome_figlio;
+                               array_push($errors, $error);
+                               $cont_err++;
+                         }
+                         if(!$figlio->has_attribute("type"))
+                         {
+                               $error->type = "missing_attribute";
+                               $error->data->tag = $nome_figlio;
+                               $error->data->attr = "type";
+                               array_push($errors, $error);
+                               $cont_err++;
+                         } else {
+                               $pre_attr = $figlio->attributes();
+                               $pre_attr_n = $pre_attr[0]->node_name();
+                               $pre_attr_v = $pre_attr[0]->node_value();
+                               if((strcmp("type", $pre_attr_n)==0)&&(strcmp("aicc_script", $pre_attr_v)!=0))
+                               {
+                                 $error->type = "attr_error";
+                                 $error->data->tag = $nome_figlio;
+                                 $error->data->attr = $pre_attr_n;
+                                 array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                           }             
+                       }
+
+                       //Il tag maxtimeallowed e' presente solo nelle versioni precedenti alla 1.3
+
+                       if(($nome_figlio == "maxtimeallowed")&&(eregi("(CAM[[:blank:]])?[1]\.[0-2]", $version_value)))
+                       {
+                         if(strcmp("item", $padre->node_name())!=0)
+                          {
+                                $error->type = "position_error";
+                                $error->data->tag = "$nome_figlio";
+                                $error->data->parent = $padre->node_name();
+                                array_push($errors);
+                                $cont_err++;
+                          }
+                         if(!$figlio->has_child_nodes())
+                          {
+                                $error->type = "no_children";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                                $cont_err++;
+                          } else {
+                               $mta_child = $figlio->first_child();
+                               if(!eregi("([0-9]{2}):([0-9]{2}):([0-9]{2})", $mta_child->get_content()))
+                               {
+                                 $error->type = "tag_error";
+                                  $error->data->tag = $nome_figlio;
+                                  array_push($errors, $error);
+                                  $cont_err++;
+                               }
+                         }
+                       }
+
+                       //Il tag masteryscore e' presente solo nelle versioni precedenti alla 1.3
+
+                        if(($nome_figlio == "masteryscore")&&(eregi("(CAM[[:blank:]])?[1]\.[0-2]", $version_value)))
+                        {
+                          if(strcmp("item", $padre->node_name())!=0)
+                          {
+                                $error->type = "position_error";
+                                $error->data->tag = "$nome_figlio";
+                                $error->data->parent = $padre->node_name();
+                                array_push($errors);
+                                $cont_err++;
+                          }
+                          if(!$figlio->has_child_nodes())
+                          {
+                                $error->type = "no_children";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                                $cont_err++;
+                          } else {
+                                $mta_child = $figlio->first_child();
+                                if(eregi("^$", $mta_child->get_content()))
+                                {
+                                  $error->type = "tag_error";
+                                  $error->data->tag = $nome_figlio;
+                                  array_push($errors, $error);
+                                  $cont_err++;
+                                }
+                          }
+                        }
+               
+                       if($nome_figlio == "resources")
+                       {
+                         if(strcmp("manifest", $padre->node_name())!=0)
+                         {
+                               $error->type = "position_error";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->parent = $padre->node_name();
+                                array_push($errors, $error);
+                               $cont_err++;
+                         }
+                       }
+
+                       if($nome_figlio == "resource")
+                       {
+                         if(strcmp("resources", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error); 
+                           $cont_err++;
+                         }
+                         if(!$figlio->has_attributes())
+                          {
+                           $error->type = "no_attributes";
+                            $error->data->tag = $nome_figlio;
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                          $res_attr = $figlio->attributes();
+                          $cont_res = count($res_attr);
+                         if($cont_res > 6)
+                         {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                         }
+                         for($i=0; $i < $cont_res; $i++)
+                         {
+                           $ra_n = $res_attr[$i]->node_name();
+                           $ra_v = $res_attr[$i]->node_value();
+                           if(!$figlio->has_attribute("identifier"))
+                           {
+                               $error->type = "missing_attribute";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->attr = "identifier";
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           elseif($ra_n == "identifier")
+                           {
+                             if(eregi("[[:graph:]]", $ra_v))
+                             {
+                               array_push($idres_array, $ra_v);
+                             } else {
+                               $error->type = "attr_error";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->attr = $ra_n;
+                                array_push($errors, $error);
+                             }
+                           }
+
+                           if(!$figlio->has_attribute("type"))
+                           {
+                             $error->type = "missing_attribute";
+                              $error->data->tag = $nome_figlio;
+                             $error->tag->attr = "type";
+                              array_push($errors, $error);
+                             $cont_err++;
+                           }
+                           elseif($ra_n == "type")
+                            {
+                              if(strcmp("webcontent", $ra_v)!=0)
+                             {
+                               $error->type = "attr_error";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->attr = "type";
+                                array_push($errors, $error);
+                               $cont_err++;
+                             }
+                           }
+
+                           if(($figlio->has_attribute("href"))&&(strcmp("href", $ra_n)==0))
+                           {
+                               if(!eregi("[[:graph:]]", $ra_v))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                 $error->data->attr = "href";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               } 
+                           }
+                           
+                           // if (xml:base)
+                       
+                           if(($figlio->has_attribute("scormType"))||($figlio->has_attribute("scormtype")))
+                           {
+                               if((strcmp("scormType", $ra_n)==0)||(strcmp("scormtype", $ra_n)==0))
+                               {
+                                  if(!((strcmp("sco", $ra_v)==0)||(strcmp("asset", $ra_v)==0)))
+                                  {
+                                    $error->type = "attr_error";
+                                     $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $ra_n;
+                                     array_push($errors, $error);
+                                    $cont_err++;
+                                  }
+                               }
+                           }
+                            else
+                           {
+                               $error->type = "missing_attribute";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->attr = "scormType";
+                                array_push($errors, $error);
+                               $cont_err++;
+                               
+                           }
+
+                           if(($figlio->has_attribute("persistState"))&&(strcmp("persistState", $ra_n)==0))
+                           {
+                               if(!eregi("[0-1]", $ra_v))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                 $error->data->attr = $ra_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                           }
+                         }
+                         
+                       }
+
+                       if($nome_figlio == "file")
+                       {
+                         if(!$figlio->has_attributes())
+                         {
+                           $error->type = "no_attributes";
+                            $error->data->tag = $nome_figlio;
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                       
+                         $file_attr = $figlio->attributes();
+                         if(($figlio->has_attribute("href"))&&($file_attr[0]->node_name() == "href"))
+                         {                       
+                           if(!eregi("[[:print:]]\.[a-z]", $file_attr[0]->node_value()))
+                            {
+                               $error->type = "attr_error";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->attr = "href";
+                                array_push($errors, $error);
+                               $cont_err++;
+                            }
+                           //else echo "SCANSIONE TAG FILE TERMINATA, OK \n";
+                         }
+                         else
+                         {
+                           $error->type = "missing_attribute";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->attr = "href";
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                       }
+
+                       if($nome_figlio == "dependency")
+                       {                       
+                         if(strcmp("resource", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if(!$figlio->has_attributes())
+                         {
+                           $error->type = "no_attributes";
+                            $error->data->tag = $nome_figlio;
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         $dep_attr = $figlio->attributes();
+                         if(($figlio->has_attribute("identifierref"))&&($dep_attr[0]->node_name() == "identifierref"))
+                         {
+                           // Per valutare il valore di dependency uso l'espressione regolare [[:graph:]]
+                           // che rappresenta tutti i caratteri ASCII stampabili, escluso lo spazio.
+
+                           if(!eregi("[[:graph:]]", $dep_attr[0]->node_value()))
+                           {
+                               $error->type = "attr_error";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->attr = "identifierref";
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           //else echo "SCANSIONE TAG DEPENDENCY TERMINATA \n";                                
+                         } else {
+                               $error->type = "missing_attribute";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->attr = "identifierref";
+                                array_push($errors, $error);
+                         }
+                       }
+
+                     if(eregi("(CAM[[:blank:]])?[1]\.[3]", $version_value))
+                     {
+                       if($nome_figlio == "sequencing")
+                       {
+                         if(!((strcmp("item", $padre->node_name())==0)||(strcmp("organization", $padre->node_name())==0)))
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);       
+                           $cont_err++;
+                         }
+                        
+                         $seq_attr = $figlio->attributes();
+                         $cont_seq = count($seq_attr);
+                         if($cont_seq > 2)
+                         {
+                           $error->type = "too_many_attributes";
+                            $error->data->tag = $nome_figlio;
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         for($i=0; $i < $cont_seq; $i++)
+                         { 
+                           $seq_a = $seq_attr[$i];   
+                           if(($figlio->has_attribute("ID"))&&($seq_a->node_name() == "ID"))
+                           {
+                             if(!eregi("[[:graph:]]", $seq_a->node_value()))
+                             { 
+                               $error->type = "attr_error";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->attr = "ID";
+                                array_push($errors, $error);
+                               $cont_err++;
+                             }
+                           }
+                           
+                           if(($figlio->has_attribute("IDRef"))&&($seq_a->node_name() == "IDRef"))
+                           {
+                             if(!eregi("[[:graph:]]", $seq_a->node_value()))
+                              {
+                               $error->type = "attr_error";
+                                $error->data->tag = $nome_figlio;
+                                $error->data->attr = "IDRef";
+                                array_push($errors, $error);
+                               $cont_err++;
+                              }
+                           }           
+                         }
+                       }
+
+                       if($nome_figlio == "controlMode")
+                       {
+                         if(strcmp("sequencing", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         
+                         $ctrlM_attr = $figlio->attributes();
+                         $cont_ctrlM = count($ctrlM_attr);
+                         if($cont_ctrlM > 6)
+                         {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);   
+                               $cont_err++;
+                         }
+                         
+                         for($i=0; $i < $cont_ctrlM; $i++)
+                         {
+                           $cM_name = $ctrlM_attr[$i]->node_name();
+                           $cM_val = $ctrlM_attr[$i]->node_value();
+                           if(($figlio->has_attribute("choice"))&&($cM_name == "choice"))
+                           {
+                               if(!((strcmp("true", $cM_val)==0)||(strcmp("false", $cM_val)==0)))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $cM_name;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                               //else "OK CHOICE";
+                           }
+                           
+                           if(($figlio->has_attribute("choiceExit"))&&($cM_name == "choiceExit"))
+                            {
+                                if(!((strcmp("true", $cM_val)==0)||(strcmp("false", $cM_val)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $cM_name;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                            }
+                       
+                           if(($figlio->has_attribute("flow"))&&($cM_name == "flow"))
+                            {
+                                if(!((strcmp("true", $cM_val)==0)||(strcmp("false", $cM_val)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $cM_name;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                            }
+
+                           if(($figlio->has_attribute("forwardOnly"))&&($cM_name == "forwardOnly"))
+                            {
+                                if(!((strcmp("true", $cM_val)==0)||(strcmp("false", $cM_val)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $cM_name;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                            }
+
+                           if(($figlio->has_attribute("01"))&&($cM_name == "01"))
+                            {
+                                if(!((strcmp("true", $cM_val)==0)||(strcmp("false", $cM_val)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $cM_name;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                            }
+
+                           if(($figlio->has_attribute("02"))&&($cM_name == "02"))
+                            {
+                                if(!((strcmp("true", $cM_val)==0)||(strcmp("false", $cM_val)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $cM_name;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                            }                      
+                         }// END FOR
+                         
+                       }
+               
+                       if($nome_figlio == "sequencingRules")
+                       {
+                         if(strcmp("sequencing", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                       }
+                       
+                       if($nome_figlio == "preConditionRule")
+                        {
+                          if(strcmp("sequencingRules", $padre->node_name())!=0)
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                         $preCo_children = $figlio->child_nodes();
+                         
+                        }
+
+                       if($nome_figlio == "postConditionRule")
+                        {
+                          if(strcmp("sequencingRules", $padre->node_name())!=0)
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                         
+                        }
+
+                       if($nome_figlio == "exitConditionRule")
+                        {
+                          if(strcmp("sequencingRules", $padre->node_name())!=0)
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                         
+                        }
+
+                       if($nome_figlio == "ruleConditions")
+                       {
+                         
+                         if(!((strcmp("preConditionRule", $padre->node_name())==0)
+                           ||(strcmp("postConditionRule", $padre->node_name())==0)
+                           ||(strcmp("exitConditionRule", $padre->node_name())==0)))
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                         
+                         if($figlio->has_attributes())
+                         {
+                           $rCs_attr = $figlio->attributes();  
+                           if($rCs_attr[0]->node_name()=="conditionCombination")
+                           {
+                             if(!((strcmp("all", $rCs[0]->node_value())==0)||(strcmp("any", $rCs[0]->node_value())==0)))
+                             {
+                               $error->type = "attr_error";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->attr = "conditionCombination";
+                                array_push($errors, $error);
+                               $cont_err++;
+                             }
+                           }   
+                         }
+                         //echo "SCANSIONE TAG RULESCONDITIONS TERMINATA";
+                       }
+
+                       if($nome_figlio == "ruleCondition")
+                       {
+                         if(strcmp("ruleConditions", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+
+                         if($figlio->has_attributes())
+                         {
+                           $rC_attr = $figlio->attributes();
+                           $cont_rC = count($rC_attr);
+                           if($cont_rC > 4)
+                           {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           for($i=0; $i < $cont_rC; $i++)
+                           {
+                               $rCa_name = $rC_attr[$i]->node_name();
+                               $rCa_val = $rC_attr[$i]->node_value();
+                               if($rCa_name == "referencedObjective")
+                               {
+                                 if(!eregi("[[:graph:]]", $rCa_val))
+                                 {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                   $error->data->attr = $rCa_name;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }
+                               
+                               if($rCa_name == "measureThreshold")
+                               {
+                                 settype($rCa_val, "float");
+                                 if(($rCa_val < -1.0000)||($rCa_val > 1.0000))
+                                 {
+                                   $error->type = "attr_error";
+                                   $error->data->tag = $nome_figlio;
+                                   $error->data->attr = $rCa_name;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }       
+
+                               if($rCa_name == "operator")                             
+                               {
+                                 if((!eregi("not", $rCa_val))||(!eregi("noOp", $rCa_val)))
+                                 {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rCa_name;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }
+       
+                               if($rCa_name == "condition")
+                               {
+                                 if(!is_cond_val($rCa_val))
+                                 {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rCa_name;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }
+                           }// END FOR
+                         }
+                       }
+
+                       if($nome_figlio == "ruleAction")
+                       {                       
+                         if($padre->node_name() == "preConditionRule")
+                         {
+                           if(($figlio->has_attributes())&&($figlio->has_attribute("action")))
+                           {
+                               $rAc_attr1 = $figlio->attributes();
+                               if($rAc_attr1[0]->node_name() != "action")
+                               {
+                                 $error->type = "missing_attribute";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = "action";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                               elseif(!is_action1($rAc_attr1[0]->node_value()))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = "action";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                               
+                           }
+                           else
+                           {
+                               $error->type = "missing_attribute";
+                                $error->data->tag = $nome_figlio;
+                                $error->data->attr = "action";
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                         }
+                       
+                         elseif($padre->node_name() == "postConditionRule")
+                          {
+                            if(($figlio->has_attributes())&&($figlio->has_attribute("action")))
+                            {
+                                $rAc_attr2 = $figlio->attributes();
+                                if($rAc_attr2[0]->node_name() != "action")
+                                {
+                                 $error->type = "missing_attribute";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = "action";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                                elseif(!is_action2($rAc_attr2[0]->node_value()))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = "action";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                               
+                            }
+                            else
+                            {
+                               $error->type = "missing_attribute";
+                                $error->data->tag = $nome_figlio;
+                                $error->data->attr = "action";
+                                array_push($errors, $error);
+                               $cont_err++;
+                            }
+                          }
+                       
+                         elseif($padre->node_name() == "exitConditionRule")
+                          {
+                            if(($figlio->has_attributes())&&($figlio->has_attribute("action")))
+                            {
+                                $rAc_attr3 = $figlio->attributes();
+                                if($rAc_attr3[0]->node_name() != "action")
+                                {
+                                 $error->type = "missing_attribute";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = "action";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                                elseif($rAc_attr3[0]->node_value() != "exit")
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = "action";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                                
+                            }
+                            else
+                            {
+                               $error->type = "missing_attribute";
+                                $error->data->tag = $nome_figlio;
+                                $error->data->attr = "action";
+                                array_push($errors, $error);
+                               $cont_err++;
+                            }
+                          }
+                         else
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                       }
+
+                       if($nome_figlio == "limitConditions")
+                       {
+                         if(strcmp("sequencing", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if($figlio->has_attributes())
+                         {
+                           $lAc_attr = $figlio->attributes();
+                           $cont_lAc = count($lAc_attr);
+                           if($cont_lAc > 2)
+                           {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           for($i=0; $i < $cont_lAc; $i++)
+                           {
+                               $lAc_name = $lAc_attr[$i]->node_name();
+                               $lAc_val = $lAc_attr[$i]->node_value();
+                               if(($figlio->has_attribute("attemptLimit"))&&($lAc_name == "attemptLimit"))
+                               {
+                                 settype($lAc_val, "int");
+                                 if($lAc_val < 0)
+                                 {
+                                   $error->type = "attr_error";
+                                   $error->data->tag = $nome_figlio;
+                                   $error->data->attr = $lAc_name;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }
+                               if($lAc_name == "attemptAbsoluteDurationLimit")
+                               {
+                                 if(!eregi("[P][[:digit:]][Y][0-9][M][0-9][D][0-9][H][0-60][M][0-60][S]", $lAc_val))
+                                  {
+                                   $error->type = "attr_error";
+                                   $error->data->tag = $nome_figlio;
+                                   $error->data->attr = $lAc_val;
+                                   array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                               }
+                           }
+                         }
+                       }
+               
+                       if($nome_figlio == "auxiliaryResources")
+                       {
+                         if(strcmp("sequencing", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         
+                       }
+
+                       if($nome_figlio == "auxiliaryResource")
+                       {
+                         if(strcmp("auxiliaryResources", $padre->node_name())!=0)
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                         if($figlio->has_attributes())
+                         {
+                           $aux_attr = $figlio->attributes();
+                           $cont_aux = count($aux_attr);
+                           if($cont_aux != 2)
+                           {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           for($i=0; $i < $cont_aux; $i++)
+                           {
+                               $aux_n = $aux_attr[$i]->node_name();
+                               $aux_v = $aux_attr[$i]->node_value();
+                               if((strcmp("auxiliaryResourceID", $aux_n)!=0)&&(strcmp("purpose", $aux_n)!=0))
+                               {
+                                 $error->type = "missing_attribute";
+                                  $error->data->tag = $nome_figlio;
+                                 $error->data->attr = $aux_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                               elseif($aux_n == "auxiliaryResourceID")
+                               {
+                                 if(!eregi("[[:graph:]]", $aux_v))
+                                 {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $aux_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }
+                               elseif($aux_n == "purpose")
+                               {       
+                                 if(!eregi("[[:graph:]]", $aux_v))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $aux_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                               }
+                           }    
+                         }//echo "SCANSIONE TAG AUXILIARYRESOURCE TERMINATA";
+                       }
+               
+                       if($nome_figlio == "rollupRules")
+                       {
+                         if(strcmp("sequencing", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if($figlio->has_attributes())
+                         {
+                           $rules_attr = $figlio->attributes();
+                           $cont_rules = count($rules_attr);
+                           if($cont_rules > 3)
+                           {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           for($i=0; $i < $cont_rules; $i++)
+                           {
+                             $rules_nome = $rules_attr[$i]->node_name();
+                             $rules_val = $rules_attr[$i]->node_value();
+                             if($rules_nome == "rollupObjectiveSatisfied")
+                             {
+                               if(!((strcmp("true", $rules_val)==0)||(strcmp("false", $rules_val)==0)))
+                               {
+                                 $error->type = "attr_error";
+                                 $error->data->tag = $nome_figlio;
+                                 $error->data->attr = $rules_nome;
+                                 array_push($errors, $error);
+                                 //echo "ERROR, rollupObjectiveSatisfied puo'assumere solo valori booleani";
+                                 $cont_err++;
+                               }
+                             }                       
+                             if($rules_nome == "rollupProgressCompletion")
+                             {
+                               if(!((strcmp("true", $rules_val)==0)||(strcmp("false", $rules_val)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $rules_nome;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                             }
+                             if($rules_nome == "objectiveMeasureWeight")
+                             {  
+                               settype($rules_val, "float");  
+                               if(($rules_val < 0.0000)||($rules_val > 1.0000))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $rules_nome;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                             }
+                           }//END FOR  
+                         }//echo "SCANSIONE TAG ROLLUPRULES TERMINATA";
+                       }// END ROLLUPRULES
+
+                       if($nome_figlio == "rollupRule")
+                       {
+                         if(strcmp("rollupRules", $padre->node_name())!= 0)
+                         {     
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);       
+                           $cont_err++;
+                         }
+                         if($figlio->has_attributes())
+                         {
+                           $rule_attr = $figlio->attributes();
+                           $cont_rule = count($rule_attr);
+                           if($cont_rule > 3)
+                           {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           for($i=0; $i < $cont_rule; $i++)
+                           {
+                               $rule_name = $rule_attr[$i]->node_name();
+                               $rule_val = $rule_attr[$i]->node_value();
+                               if($rule_name == "childActivitySet")
+                               {
+                                 if(!((strcmp("all", $rule_val)==0)||(strcmp("any", $rule_val)==0)))
+                                 {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rule_nome;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }
+                               if($rule_name == "minimumCount")
+                               {
+                                 settype($rule_val, "int");
+                                 if($rule_val < 0)
+                                 {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rule_nome;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }
+                               if($rule_name == "minimumPercent")
+                                {
+                                 settype($rule_val, "float");
+                                  if(($rule_val < 0.0000)||($rule_val > 1.0000))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rules_nome;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                                }
+                           }
+                         }//echo "SCANSIONE TAG ROLLUPRULE TERMINATA";
+                       }
+
+                       if($nome_figlio == "rollupConditions")
+                       {
+                         if(strcmp("rollupRule", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if(($figlio->has_attributes())&&($figlio->has_attribute("conditionCombination")))
+                         {
+                           $rCo_attr = $figlio->attributes();
+                           $rCo_name = $rCo_attr[0]->node_name();
+                           $rCo_val = $rCo_attr[0]->node_val();
+                            if($rCo_name != "conditionCombination")
+                            {
+                             $error->type = "missing_attribute";
+                              $error->data->tag = $nome_figlio;
+                              $error->data->attr = $rCo_name;
+                              array_push($errors, $error);
+                             $cont_err++;
+                            }
+                            elseif(!((strcmp("all", $rCo_val)==0)||(strcmp("any", $rCo_val)==0)))
+                            {
+                             $error->type = "attr_error";
+                              $error->data->tag = $nome_figlio;
+                              $error->data->attr = $rCo_name;
+                              array_push($errors, $error);
+                             $cont_err++;
+                            }
+                         }
+                         //echo "SCANSIONE TAG ROLLUPCONDITIONS TERMINATA";
+                       }
+                       
+                       if($nome_figlio == "rollupCondition")                   
+                       {
+                         if(strcmp("rollupConditions", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if($figlio->has_attributes())
+                         {
+                           $rCond_attr = $figlio->attributes();
+                           $cont_rCond = count($rCond_attr);
+                           if($cont_rCond > 2)
+                           {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           for($i=0; $i < $cont_rCond; $i++)
+                           {
+                             $rCond_n = $rCond_attr[$i]->node_name();
+                             $rCond_v = $rCond_attr[$i]->node_value();
+                             if($rCond_n == "operator")
+                             {
+                               if(!((strcmp("not", $rCond_v)==0)||(strcmp("noOp", $rCond_v)==0)))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $rCond_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                             }                              
+                             elseif($rCond_n == "condition")
+                             {
+                               if(!is_rcond_val($rCond_v))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $rCond_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }       
+                             }
+                             else
+                             { 
+                               $error->type = "missing_attribute";
+                                $error->data->tag = $nome_figlio;
+                                $error->data->attr = "condition";
+                                array_push($errors, $error);
+                               $cont_err++;
+                             }  
+                           }
+                         }
+                         else
+                         {
+                            $error->type = "no_attributes";
+                             $error->data->tag = $nome_figlio;
+                             array_push($errors, $error);
+                            $cont_err++;
+                         }
+                       }
+       
+                       if($nome_figlio == "rollupAction")
+                       {
+                         if(strcmp("rollupRule", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();  
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if(($figlio->has_attributes())&&($figlio->has_attribute("action")))
+                            {
+                                $roAc_attr = $figlio->attributes();
+                                if($roAc_attr[0]->node_name() != "action")
+                                {
+                                 $error->type = "missing_attribute";
+                                  $error->data->tag = $nome_figlio;
+                                 $error->data->attr = "action";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                                elseif(!is_rolAc_val($roAc_attr[0]->node_value()))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = "action";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                            }
+                            else
+                            {
+                               $error->type = "missing_attribute";
+                                $error->data->tag = $nome_figlio;
+                                $error->data->attr = "action";
+                                array_push($errors, $error);
+                               $cont_err++;
+                            }
+                       }
+
+                       if($nome_figlio == "objectives")
+                        {
+                          if(strcmp("sequencing", $padre->node_name())!=0)
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                        }                      
+               
+                       if($nome_figlio == "primaryObjective")
+                       {
+                         if(strcmp("objectives", $padre->node_name())!=0)
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                         if($figlio->has_attributes())
+                         {
+                           $prObj_attr = $figlio->attributes();
+                           $cont_prObj = count($prObj_attr);
+                           if($cont_prObj > 2)
+                           {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           for($i=0; $i < $cont_prObj; $i++)
+                           {
+                             $pro_n = $prObj_attr[$i]->node_name();
+                             $pro_v = $prObj_attr[$i]->node_value();
+                             if($pro_n == "satisfiedByMeasure")
+                             {
+                               if(!((strcmp("true", $pro_v)==0)||(strcmp("false", $pro_v)==0)))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                 $error->data->attr = $pro_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                             }
+                             if($pro_n == "objectiveID")
+                             {
+                               if(!eregi("[[:graph:]]", $pro_v))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $pro_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                             }
+                           }
+                         }
+                       }
+                       
+                       if($nome_figlio == "minNormalizedMeasure")
+                       {
+                         $fn = $padre->node_name();                    
+                          if(!((strcmp("primaryObjective", $fn)==0)||(strcmp("objective", $fn)==0)))
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                          
+                         if($figlio->has_child_nodes())
+                         {
+                           $figlio1 = $figlio->first_child();
+                           if($figlio1->node_type() != 3)
+                           {
+                               $error->type = "not_corr_type";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           settype($figlio1->get_content(), "float");
+                           if(($figlio1->get_content() < 0.0)||($figlio1->get_content() > 1.0))
+                           {
+                               $error->type = "tag_error";
+                                $error->data->tag = $nome_figlio;
+                                $error->data->value = $figlio1->get_content();
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }                       
+                         }
+                         else
+                         {
+                           $error->type = "tag_error";
+                            $error->data->tag = $nome_figlio;
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                       }
+
+                       if($nome_figlio == "mapInfo")
+                       {
+                         $pn = $padre->node_name();
+                          if(!((strcmp("primaryObjective", $pn)==0)||(strcmp("objective", $pn)==0)))
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                         if($figlio->has_attributes())
+                         {
+                           $map_attr = $figlio->attributes();
+                           $cont_map = count($map_attr);
+                           if($cont_map > 5)
+                           {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           if(!$figlio->has_attribute("targetObjectiveID"))
+                           {
+                               $error->type = "missing_attribute";
+                                $error->data->tag = $nome_figlio;
+                               $error->data->attr = "targetObjectiveID";
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           for($i=0; $i < $cont_map; $i++)
+                           {
+                             $map_n = $map_attr[$i]->node_name();
+                             $map_v = $map_attr[$i]->node_value();
+                             if($map_n == "targetObjectiveID")
+                             {
+                               if(!eregi("[[:graph:]]", $map_v))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = "targetObjectiveID";
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                             }
+                             if($map_n == "readSatisfiedStatus")
+                             {
+                               if(!((strcmp("true", $map_v)==0)||(strcmp("false", $map_v)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $map_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }      
+                             }
+                             if($map_n == "readNormalizedMeasure")
+                             {
+                                if(!((strcmp("true", $map_v)==0)||(strcmp("false", $map_v)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $map_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                              }
+                             if($map_n == "writeSatisfiedStatus")
+                             {
+                                if(!((strcmp("true", $map_v)==0)||(strcmp("false", $map_v)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $map_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                              }
+                             if($map_n == "writeNormalizedMeasure")
+                             {
+                               if(!((strcmp("true", $map_v)==0)||(strcmp("false", $map_v)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $map_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                             } 
+                           }// END FOR
+                         }
+                         else
+                         {
+                            $error->type = "missing_attribute";
+                             $error->data->tag = $nome_figlio;
+                             $error->data->attr = "targetObjectiveID";
+                             array_push($errors, $error);
+                            $cont_err++;
+                         }
+                         
+                       }
+                       
+                       if($nome_figlio == "objective")
+                        {
+                          if(strcmp("objectives", $padre->node_name())!=0)
+                          {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                          }
+                          if($figlio->has_attributes())
+                          {
+                            $obj_attr = $figlio->attributes();
+                            $cont_obj = count($obj_attr);
+                            if($cont_obj > 2)
+                            {  
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                            }
+                            for($i=0; $i < $cont_obj; $i++)
+                            {
+                              $ob_n = $obj_attr[$i]->node_name();
+                              $ob_v = $obj_attr[$i]->node_value();
+                              if($ob_n == "satisfiedByMeasure")
+                              {
+                                if(!((strcmp("true", $ob_v)==0)||(strcmp("false", $ob_v)==0)))
+                                {
+                                 $error->type = "attr_error";
+                                 $error->data->tag = $nome_figlio;
+                                 $error->data->attr = $ob_n;
+                                 array_push($errors, $error);
+                                 $cont_err++;
+                                }
+                              }
+                              if($ob_n == "objectiveID")
+                              {
+                                if(!eregi("[[:graph:]]", $ob_v))
+                               {
+                                 $error->type = "attr_error";
+                                  $error->data->tag = $nome_figlio;
+                                  $error->data->attr = $ob_n;
+                                  array_push($errors, $error);
+                                 $cont_err++;
+                               }
+                              }
+                            }
+                          }
+                        }
+                       
+                       if($nome_figlio == "randomizationControls")
+                       {                       
+                         if(strcmp("sequencing", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if($figlio->has_attributes())
+                         {
+                           $rand_attr = $figlio->attributes();
+                           $cont_rand = count($rand_attr);
+                           if($cont_rand > 4)
+                           {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           for($i=0; $i < $cont_rand; $i++)
+                           {
+                               $rAt_n = $rand_attr[$i]->node_name();
+                               $rAt_v = $rand_attr[$i]->node_value();
+                               if($rAt_n == "randomizationTiming")
+                               {
+                                 if(!is_randT_attr($rAt_v))
+                                 {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rAt_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }
+                               if($rAt_n == "selectCount")
+                               {
+                                 setttype($rAt_v, "int");
+                                 if($rAt_v < 0)
+                                 {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rAt_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }
+                               if($rAt_n == "reorderChildren")
+                               {
+                                 if(!((strcmp("true", $rAt_v)==0)||(strcmp("false", $rAt_v)==0)))
+                                 {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rAt_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                 }
+                               }       
+                               if($rAt_v == "selectionTiming")
+                               {
+                                 if(!is_randT_attr($rAt_v))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rAt_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                               }
+                           }
+                         }//echo "SCANSIONE TAG RANDOMIZATION CONTROLS TERMINATA";
+                       }
+                       
+                       if($nome_figlio == "deliveryControls")
+                       {
+                         if(strcmp("sequencing", $padre->node-name())!=0)
+                         {
+                           $error->type = "position_error";
+                           $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                           array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if($figlio->has_attributes())
+                         {
+                           $delv_attr = $figlio->attributes();
+                           $cont_delv = count($delv_attr);
+                           if($cont_delv > 3)
+                           {
+                               $error->type = "too_many_attributes";
+                               $error->data->tag = $nome_figlio;
+                               array_push($errors, $error);
+                               $cont_err++;
+                           }
+                           for($i=0; $i < $cont_delv; $i++)
+                           {
+                               $delv_n = $delv_attr[$i]->node_name();
+                               $delv_v + $delv_attr[$i]->node_value();
+                               if($delv_n == "tracked")
+                               {
+                                 if(!((strcmp("true", $delv_v)==0)||(strcmp("false", $delv_v)==0)))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $delv_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                               }
+                               if($delv_n == "completionSetByContent")
+                               {
+                                 if(!((strcmp("true", $delv_v)==0)||(strcmp("false", $delv_v)==0)))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $delv_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                               }
+                               if($delv_n == "objectiveSetByContent")
+                               {
+                                 if(!((strcmp("true", $delv_v)==0)||(strcmp("false", $delv_v)==0)))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $delv_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                               }
+                           }
+                         }//echo "SCANSIONE TAG DELIVERYCONTROLS COMPLETATA";
+                       }
+       
+                       if($nome_figlio == "constrainedChoiceConsiderations")
+                       {
+                         if(strcmp("sequencing", $padre->node_name())!=0)
+                         {
+                           $error->type = "position_error";
+                           $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                           array_push($errors, $error);
+                           $cont_err++;
+                         }
+                         if($figlio->has_attributes())
+                          {
+                            $ccc_attr = $figlio->attributes();
+                            $cont_ccc = count($ccc_attr);
+                            if($cont_ccc > 2)
+                            {
+                               $error->type = "too_many_attributes";
+                               $error->data->tag = $nome_figlio;
+                               array_push($errors, $error);
+                               $cont_err++;
+                            }
+                            for($i=0; $i < $cont_ccc; $i++)
+                            {
+                                $ccc_n = $ccc_attr[$i]->node_name();
+                                $ccc_v + $ccc_attr[$i]->node_value();
+                                if($ccc_n == "preventActivation")
+                                {
+                                  if(!((strcmp("true", $ccc_v)==0)||(strcmp("false", $ccc_v)==0)))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $ccc_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                                }
+                                if($ccc_n == "constrainChoice")
+                                {
+                                  if(!((strcmp("true", $ccc_v)==0)||(strcmp("false", $ccc_v)==0)))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $ccc_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                                }
+                           }
+                          }
+                       }
+               
+                       if($nome_figlio == "rollupConsiderations")
+                       {
+                         if(strcmp("sequencing", $padre->node_name())!=0)
+                          {
+                           $error->type = "position_error";
+                           $error->data->tag = $nome_figlio;
+                           $error->data->parent = $padre->node_name();
+                           array_push($errors, $error);
+                           $cont_err++;
+                          } 
+                         if($figlio->has_attributes())
+                          {
+                            $rolCo_attr = $figlio->attributes();
+                            $cont_rolCo = count($rolCo_attr);
+                            if($cont_rolCo > 5)
+                            {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                            }
+                            for($i=0; $i < $cont_rolCo; $i++)
+                            {
+                                $rolCo_n = $rolCo_attr[$i]->node_name();
+                                $rolCo_v =  $rolCo_attr[$i]->node_value();
+                                if($rolCo_n == "measureSatisfactionIfActive")
+                                {
+                                  if(!((strcmp("true", $rolCo_v)==0)||(strcmp("false", $rolCo_v)==0)))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rolCo_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                                }
+                                if($rolCo_n == "requiredForSatisfied")
+                                {
+                                  if(!is_rolCo_val($rolCo_v))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rolCo_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                                }
+                               if($rolCo_n == "requiredForNotSatisfied")
+                                {
+                                  if(!is_rolCo_val($rolCo_v))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rolCo_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                                }
+                               if($rolCo_n == "requiredForCompleted")
+                                {
+                                  if(!is_rolCo_val($rolCo_v))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rolCo_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                                }
+                               if($rolCo_n == "requiredForIncomplete")
+                                {
+                                  if(!is_rolCo_val($rolCo_v))
+                                  {
+                                   $error->type = "attr_error";
+                                    $error->data->tag = $nome_figlio;
+                                    $error->data->attr = $rolCo_n;
+                                    array_push($errors, $error);
+                                   $cont_err++;
+                                  }
+                                }
+                            }
+                         }
+                       }
+               
+                       if($nome_figlio == "presentation")
+                       {
+                         if(strcmp("item", $padre->node_name())!=0)
+                         {
+                            $error->type = "position_error";
+                            $error->data->tag = $nome_figlio;
+                            $error->data->parent = $padre->node_name();
+                            array_push($errors, $error);
+                            $cont_err++;
+                         }
+                       }
+
+                       if($nome_figlio == "navigationInterface")
+                       {
+                         if(strcmp("presentation", $padre->node_name())!=0)
+                          {
+                            $error->type = "position_error";
+                             $error->data->tag = $nome_figlio;
+                            $error->data->parent = $padre->node_name();
+                             array_push($errors, $error);
+                            $cont_err++;
+                         }
+                       }
+
+                       if($nome_figlio == "hideLMSUI")
+                       {
+                         if(strcmp("navigationInterface", $padre->node_name())!=0)
+                         {
+                            $error->type = "position_error";
+                             $error->data->tag = $nome_figlio;
+                            $error->data->parent = $padre->node_name();
+                             array_push($errors, $error);
+                            $cont_err++;
+                         }
+                         if($figlio->has_child_nodes())
+                         {
+                            $hide_children = $figlio->child_nodes();
+                            $cont_hide = count($hide_children);
+                            if($cont_hide > 4)
+                            {
+                               $error->type = "too_many_attributes";
+                                $error->data->tag = $nome_figlio;
+                                array_push($errors, $error);
+                               $cont_err++;
+                            }
+                            for($i=0; $i < $cont_hide; $i++)
+                            {
+                               $hch_t = $hide_children[$i]->node_type();
+                               $hch_cont = $hide_children[$i]->get_content();
+                               if(($hch_t == 3)&&(is_hch_cont($hch_cont)))
+                               {
+                                 //echo "OK, SCANSIONE TAG HIDELMSUI TERMINATA";
+                               }
+                               else
+                               {
+                                  $error->type = "tag_error";
+                                   $error->data->tag = $nome_figlio;
+                                  $error->data->value = $hch_cont;
+                                   array_push($errors, $error);
+                                  $cont_err++;
+                               }
+                            }
+                         }
+                       }
+                     }
+
+                 }// END IF FIGLIO
+                 if($figlio->has_child_nodes())
+                 {     
+                       testNode($figlio);      //Ricorsione sui nodi figli
+                 }
+                 $figlio = $figlio->next_sibling();
+         }
+  }
+
+  if(count($errors) > 0)
+  {
+    return false;
+  }
+  else return true;    
+}
+
+
+?>