From 2b09e37782ca7933220fda69787e5c83d9d8718c Mon Sep 17 00:00:00 2001
From: moodler <moodler>
Date: Tue, 9 Sep 2003 02:22:36 +0000
Subject: [PATCH] Fixes for obfuscate_text() when printing emails with numbers
 in them. (Patch from Zbigniew Fiedorowicz  - thanks)

---
 lib/weblib.php | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/lib/weblib.php b/lib/weblib.php
index 68ad3c1a8e..fdc77a3b86 100644
--- a/lib/weblib.php
+++ b/lib/weblib.php
@@ -1605,13 +1605,20 @@ function obfuscate_text($plaintext) {
     $i=0;
     $length = strlen($plaintext);
     $obfuscated="";
+    $prev_obfuscated = false;
     while ($i < $length) {
-        if (rand(0,2)) {
+        $c = ord($plaintext{$i});
+        $numerical = ($c >= ord('0')) && ($c <= ord('9'));
+        if ($prev_obfuscated and $numerical ) {
+            $obfuscated.='&#'.ord($plaintext{$i});
+        } else if (rand(0,2)) {
             $obfuscated.='&#'.ord($plaintext{$i});
+            $prev_obfuscated = true;
         } else {
             $obfuscated.=$plaintext{$i};
+            $prev_obfuscated = false;
         }
-        $i++;
+      $i++;
     }
     return $obfuscated;
 }
-- 
2.39.5