-<?php\r
-\r
-/**\r
-ADOdb Date Library, part of the ADOdb abstraction library\r
-Download: http://php.weblogs.com/adodb_date_time_library\r
-\r
-PHP native date functions use integer timestamps for computations.\r
-Because of this, dates are restricted to the years 1901-2038 on Unix \r
-and 1970-2038 on Windows due to integer overflow for dates beyond \r
-those years. This library overcomes these limitations by replacing the \r
-native function's signed integers (normally 32-bits) with PHP floating \r
-point numbers (normally 64-bits).\r
-\r
-Dates from 100 A.D. to 3000 A.D. and later\r
-have been tested. The minimum is 100 A.D. as <100 will invoke the\r
-2 => 4 digit year conversion. The maximum is billions of years in the \r
-future, but this is a theoretical limit as the computation of that year \r
-would take too long with the current implementation of adodb_mktime().\r
-\r
-This library replaces native functions as follows:\r
-\r
-<pre> \r
- getdate() with adodb_getdate()\r
- date() with adodb_date() \r
- gmdate() with adodb_gmdate()\r
- mktime() with adodb_mktime()\r
- gmmktime() with adodb_gmmktime()45\r
-</pre>\r
- \r
-The parameters are identical, except that adodb_date() accepts a subset\r
-of date()'s field formats. Mktime() will convert from local time to GMT, \r
-and date() will convert from GMT to local time, but daylight savings is \r
-not handled currently.\r
-\r
-This library is independant of the rest of ADOdb, and can be used\r
-as standalone code.\r
-\r
-PERFORMANCE\r
-\r
-For high speed, this library uses the native date functions where\r
-possible, and only switches to PHP code when the dates fall outside \r
-the 32-bit signed integer range.\r
-\r
-GREGORIAN CORRECTION\r
-\r
-Pope Gregory shortened October of A.D. 1582 by ten days. Thursday, \r
-October 4, 1582 (Julian) was followed immediately by Friday, October 15, \r
-1582 (Gregorian). \r
-\r
-Since 0.06, we handle this correctly, so:\r
-\r
-adodb_mktime(0,0,0,10,15,1582) - adodb_mktime(0,0,0,10,4,1582) \r
- == 24 * 3600 (1 day)\r
-\r
-=============================================================================\r
-\r
-COPYRIGHT\r
-\r
-(c) 2003 John Lim and released under BSD-style license except for code by jackbbs,\r
-which includes adodb_mktime, adodb_get_gmt_different, adodb_is_leap_year\r
-and originally found at http://www.php.net/manual/en/function.mktime.php\r
-\r
-=============================================================================\r
-\r
-BUG REPORTS\r
-\r
-These should be posted to the ADOdb forums at\r
-\r
- http://phplens.com/lens/lensforum/topics.php?id=4\r
-\r
-=============================================================================\r
-\r
-FUNCTION DESCRIPTIONS\r
-\r
-\r
-FUNCTION adodb_getdate($date=false)\r
-\r
-Returns an array containing date information, as getdate(), but supports\r
-dates greater than 1901 to 2038.\r
-\r
-\r
-FUNCTION adodb_date($fmt, $timestamp = false)\r
-\r
-Convert a timestamp to a formatted local date. If $timestamp is not defined, the\r
-current timestamp is used. Unlike the function date(), it supports dates\r
-outside the 1901 to 2038 range.\r
-\r
-The format fields that adodb_date supports:\r
-\r
-<pre>\r
-a - "am" or "pm" \r
-A - "AM" or "PM" \r
-d - day of the month, 2 digits with leading zeros; i.e. "01" to "31" \r
-D - day of the week, textual, 3 letters; e.g. "Fri" \r
-F - month, textual, long; e.g. "January" \r
-g - hour, 12-hour format without leading zeros; i.e. "1" to "12" \r
-G - hour, 24-hour format without leading zeros; i.e. "0" to "23" \r
-h - hour, 12-hour format; i.e. "01" to "12" \r
-H - hour, 24-hour format; i.e. "00" to "23" \r
-i - minutes; i.e. "00" to "59" \r
-j - day of the month without leading zeros; i.e. "1" to "31" \r
-l (lowercase 'L') - day of the week, textual, long; e.g. "Friday" \r
-L - boolean for whether it is a leap year; i.e. "0" or "1" \r
-m - month; i.e. "01" to "12" \r
-M - month, textual, 3 letters; e.g. "Jan" \r
-n - month without leading zeros; i.e. "1" to "12" \r
-O - Difference to Greenwich time in hours; e.g. "+0200" \r
-r - RFC 822 formatted date; e.g. "Thu, 21 Dec 2000 16:01:07 +0200" \r
-s - seconds; i.e. "00" to "59" \r
-S - English ordinal suffix for the day of the month, 2 characters; \r
- i.e. "st", "nd", "rd" or "th" \r
-t - number of days in the given month; i.e. "28" to "31"\r
-T - Timezone setting of this machine; e.g. "EST" or "MDT" \r
-U - seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) \r
-w - day of the week, numeric, i.e. "0" (Sunday) to "6" (Saturday) \r
-Y - year, 4 digits; e.g. "1999" \r
-y - year, 2 digits; e.g. "99" \r
-z - day of the year; i.e. "0" to "365" \r
-Z - timezone offset in seconds (i.e. "-43200" to "43200"). \r
- The offset for timezones west of UTC is always negative, \r
- and for those east of UTC is always positive. \r
-</pre>\r
-\r
-Unsupported:\r
-<pre>\r
-B - Swatch Internet time \r
-I (capital i) - "1" if Daylight Savings Time, "0" otherwise.\r
-W - ISO-8601 week number of year, weeks starting on Monday \r
-\r
-</pre>\r
-\r
-\r
-FUNCTION adodb_gmdate($fmt, $timestamp = false)\r
-\r
-Convert a timestamp to a formatted GMT date. If $timestamp is not defined, the\r
-current timestamp is used. Unlike the function date(), it supports dates\r
-outside the 1901 to 2038 range.\r
-\r
-\r
-FUNCTION adodb_mktime($hr, $min, $sec, $month, $day, $year)\r
-\r
-Converts a local date to a unix timestamp. Unlike the function mktime(), it supports\r
-dates outside the 1901 to 2038 range. Differs from mktime() in that all parameters\r
-are currently compulsory.\r
-\r
-FUNCTION adodb_gmmktime($hr, $min, $sec, $month, $day, $year)\r
-\r
-Converts a gmt date to a unix timestamp. Unlike the function gmmktime(), it supports\r
-dates outside the 1901 to 2038 range. Differs from gmmktime() in that all parameters\r
-are currently compulsory.\r
-\r
-=============================================================================\r
-\r
-NOTES\r
-\r
-Useful url for generating test timestamps:\r
- http://www.4webhelp.net/us/timestamp.php\r
-\r
-Possible future optimizations include \r
-\r
-a. Using an algorithm similar to Plauger's in "The Standard C Library" \r
-(page 428, xttotm.c _Ttotm() function). Plauger's algorithm will not \r
-work outside 32-bit signed range, so i decided not to implement it.\r
-\r
-b. Iterate over a block of years (say 12) when searching for the \r
-correct year.\r
-\r
-c. Implement daylight savings, which looks awfully complicated, see\r
- http://webexhibits.org/daylightsaving/\r
-\r
-\r
-CHANGELOG\r
-- 3 March 2003 0.08\r
-Added support for 'S' adodb_date() format char. Added constant ADODB_ALLOW_NEGATIVE_TS\r
-if you want PHP to handle negative timestamps between 1901 to 1969.\r
-\r
-- 27 Feb 2003 0.07\r
-All negative numbers handled by adodb now because of RH 7.3+ problems.\r
-See http://bugs.php.net/bug.php?id=20048&edit=2\r
-\r
-- 4 Feb 2003 0.06\r
-Fixed a typo, 1852 changed to 1582! This means that pre-1852 dates\r
-are now correctly handled.\r
-\r
-- 29 Jan 2003 0.05\r
-\r
-Leap year checking differs under Julian calendar (pre 1582). Also\r
-leap year code optimized by checking for most common case first.\r
-\r
-We also handle month overflow correctly in mktime (eg month set to 13).\r
-\r
-Day overflow for less than one month's days is supported.\r
-\r
-- 28 Jan 2003 0.04\r
-\r
-Gregorian correction handled. In PHP5, we might throw an error if \r
-mktime uses invalid dates around 5-14 Oct 1582. Released with ADOdb 3.10.\r
-Added limbo 5-14 Oct 1582 check, when we set to 15 Oct 1582.\r
-\r
-- 27 Jan 2003 0.03\r
-\r
-Fixed some more month problems due to gmt issues. Added constant ADODB_DATE_VERSION.\r
-Fixed calculation of days since start of year for <1970. \r
-\r
-- 27 Jan 2003 0.02\r
-\r
-Changed _adodb_getdate() to inline leap year checking for better performance.\r
-Fixed problem with time-zones west of GMT +0000.\r
-\r
-- 24 Jan 2003 0.01\r
-\r
-First implementation.\r
-*/\r
-\r
-\r
-/* Initialization */\r
-\r
-/*\r
- Version Number\r
-*/\r
-define('ADODB_DATE_VERSION',0.08);\r
-\r
-/*\r
- We check for Windows as only +ve ints are accepted as dates on Windows.\r
- \r
- Apparently this problem happens also with Linux, RH 7.3 and later!\r
- \r
- glibc-2.2.5-34 and greater has been changed to return -1 for dates <\r
- 1970. This used to work. The problem exists with RedHat 7.3 and 8.0\r
- echo (mktime(0, 0, 0, 1, 1, 1960)); // prints -1\r
- \r
- References:\r
- http://bugs.php.net/bug.php?id=20048&edit=2\r
- http://lists.debian.org/debian-glibc/2002/debian-glibc-200205/msg00010.html\r
-*/\r
-\r
-if (!defined('ADODB_ALLOW_NEGATIVE_TS')) define('ADODB_NO_NEGATIVE_TS',1);\r
-\r
-function adodb_date_test_date($y1,$m)\r
-{\r
- //print " $y1/$m ";\r
- $t = adodb_mktime(0,0,0,$m,13,$y1);\r
- if ("$y1-$m-13 00:00:00" != adodb_date('Y-n-d H:i:s',$t)) {\r
- print "<b>$y1 error</b><br>";\r
- return false;\r
- }\r
- return true;\r
-}\r
-/**\r
- Test Suite\r
-*/\r
-function adodb_date_test()\r
-{\r
- \r
- error_reporting(E_ALL);\r
- print "<h4>Testing adodb_date and adodb_mktime. version=".ADODB_DATE_VERSION. "</h4>";\r
- set_time_limit(0);\r
- $fail = false;\r
- \r
- // This flag disables calling of PHP native functions, so we can properly test the code\r
- if (!defined('ADODB_TEST_DATES')) define('ADODB_TEST_DATES',1);\r
- \r
- print "<p>Testing gregorian <=> julian conversion<p>";\r
- $t = adodb_mktime(0,0,0,10,11,1492);\r
- //http://www.holidayorigins.com/html/columbus_day.html - Friday check\r
- if (!(adodb_date('D Y-m-d',$t) == 'Fri 1492-10-11')) print 'Error in Columbus landing<br>';\r
- \r
- $t = adodb_mktime(0,0,0,2,29,1500);\r
- if (!(adodb_date('Y-m-d',$t) == '1500-02-29')) print 'Error in julian leap years<br>';\r
- \r
- $t = adodb_mktime(0,0,0,2,29,1700);\r
- if (!(adodb_date('Y-m-d',$t) == '1700-03-01')) print 'Error in gregorian leap years<br>';\r
- \r
- print adodb_mktime(0,0,0,10,4,1582).' ';\r
- print adodb_mktime(0,0,0,10,15,1582);\r
- $diff = (adodb_mktime(0,0,0,10,15,1582) - adodb_mktime(0,0,0,10,4,1582));\r
- if ($diff != 3600*24) print " <b>Error in gregorian correction = ".($diff/3600/24)." days </b><br>";\r
- \r
- print " 15 Oct 1582, Fri=".(adodb_dow(1582,10,15) == 5 ? 'Fri' : '<b>Error</b>')."<br>";\r
- print " 4 Oct 1582, Thu=".(adodb_dow(1582,10,4) == 4 ? 'Thu' : '<b>Error</b>')."<br>";\r
- \r
- print "<p>Testing overflow<p>";\r
- \r
- $t = adodb_mktime(0,0,0,3,33,1965);\r
- if (!(adodb_date('Y-m-d',$t) == '1965-04-02')) print 'Error in day overflow 1 <br>';\r
- $t = adodb_mktime(0,0,0,4,33,1971);\r
- if (!(adodb_date('Y-m-d',$t) == '1971-05-03')) print 'Error in day overflow 2 <br>';\r
- $t = adodb_mktime(0,0,0,1,60,1965);\r
- if (!(adodb_date('Y-m-d',$t) == '1965-03-01')) print 'Error in day overflow 3 '.adodb_date('Y-m-d',$t).' <br>';\r
- $t = adodb_mktime(0,0,0,12,32,1965);\r
- if (!(adodb_date('Y-m-d',$t) == '1966-01-01')) print 'Error in day overflow 4 '.adodb_date('Y-m-d',$t).' <br>';\r
- $t = adodb_mktime(0,0,0,12,63,1965);\r
- if (!(adodb_date('Y-m-d',$t) == '1966-02-01')) print 'Error in day overflow 5 '.adodb_date('Y-m-d',$t).' <br>';\r
- $t = adodb_mktime(0,0,0,13,3,1965);\r
- if (!(adodb_date('Y-m-d',$t) == '1966-01-03')) print 'Error in mth overflow 1 <br>';\r
- \r
- print "Testing 2-digit => 4-digit year conversion<p>";\r
- if (adodb_year_digit_check(00) != 2000) print "Err 2-digit 2000<br>";\r
- if (adodb_year_digit_check(10) != 2010) print "Err 2-digit 2010<br>";\r
- if (adodb_year_digit_check(20) != 2020) print "Err 2-digit 2020<br>";\r
- if (adodb_year_digit_check(30) != 2030) print "Err 2-digit 2030<br>";\r
- if (adodb_year_digit_check(40) != 1940) print "Err 2-digit 1940<br>";\r
- if (adodb_year_digit_check(50) != 1950) print "Err 2-digit 1950<br>";\r
- if (adodb_year_digit_check(90) != 1990) print "Err 2-digit 1990<br>";\r
- \r
- // Test string formating\r
- print "<p>Testing date formating</p>";\r
- $fmt = '\d\a\t\e T Y-m-d H:i:s a A d D F g G h H i j l L m M n O \R\F\C822 r s t U w y Y z Z 2003';\r
- $s1 = date($fmt,0);\r
- $s2 = adodb_date($fmt,0);\r
- if ($s1 != $s2) {\r
- print " date() 0 failed<br>$s1<br>$s2<br>";\r
- }\r
- flush();\r
- for ($i=100; --$i > 0; ) {\r
-\r
- $ts = 3600.0*((rand()%60000)+(rand()%60000))+(rand()%60000);\r
- $s1 = date($fmt,$ts);\r
- $s2 = adodb_date($fmt,$ts);\r
- //print "$s1 <br>$s2 <p>";\r
- $pos = strcmp($s1,$s2);\r
-\r
- if (($s1) != ($s2)) {\r
- for ($j=0,$k=strlen($s1); $j < $k; $j++) {\r
- if ($s1[$j] != $s2[$j]) {\r
- print substr($s1,$j).' ';\r
- break;\r
- }\r
- }\r
- print "<b>Error date(): $ts<br><pre> \r
- \"$s1\" (date len=".strlen($s1).")\r
- \"$s2\" (adodb_date len=".strlen($s2).")</b></pre><br>";\r
- $fail = true;\r
- }\r
- \r
- $a1 = getdate($ts);\r
- $a2 = adodb_getdate($ts);\r
- $rez = array_diff($a1,$a2);\r
- if (sizeof($rez)>0) {\r
- print "<b>Error getdate() $ts</b><br>";\r
- print_r($a1);\r
- print "<br>";\r
- print_r($a2);\r
- print "<p>";\r
- $fail = true;\r
- }\r
- }\r
- \r
- // Test generation of dates outside 1901-2038\r
- print "<p>Testing random dates between 100 and 4000</p>";\r
- adodb_date_test_date(100,1);\r
- for ($i=100; --$i >= 0;) {\r
- $y1 = 100+rand(0,1970-100);\r
- $m = rand(1,12);\r
- adodb_date_test_date($y1,$m);\r
- \r
- $y1 = 3000-rand(0,3000-1970);\r
- adodb_date_test_date($y1,$m);\r
- }\r
- print '<p>';\r
- $start = 1960+rand(0,10);\r
- $yrs = 12;\r
- $i = 365.25*86400*($start-1970);\r
- $offset = 36000+rand(10000,60000);\r
- $max = 365*$yrs*86400;\r
- $lastyear = 0;\r
- \r
- // we generate a timestamp, convert it to a date, and convert it back to a timestamp\r
- // and check if the roundtrip broke the original timestamp value.\r
- print "Testing $start to ".($start+$yrs).", or $max seconds, offset=$offset: ";\r
- \r
- for ($max += $i; $i < $max; $i += $offset) {\r
- $ret = adodb_date('m,d,Y,H,i,s',$i);\r
- $arr = explode(',',$ret);\r
- if ($lastyear != $arr[2]) {\r
- $lastyear = $arr[2];\r
- print " $lastyear ";\r
- flush();\r
- }\r
- $newi = adodb_mktime($arr[3],$arr[4],$arr[5],$arr[0],$arr[1],$arr[2]);\r
- if ($i != $newi) {\r
- print "Error at $i, adodb_mktime returned $newi ($ret)";\r
- $fail = true;\r
- break;\r
- }\r
- }\r
- \r
- if (!$fail) print "<p>Passed !</p>";\r
- else print "<p><b>Failed</b> :-(</p>";\r
-}\r
-\r
-/**\r
- Returns day of week, 0 = Sunday,... 6=Saturday. \r
- Algorithm from PEAR::Date_Calc\r
-*/\r
-function adodb_dow($year, $month, $day)\r
-{\r
-/*\r
-Pope Gregory removed 10 days - October 5 to October 14 - from the year 1582 and \r
-proclaimed that from that time onwards 3 days would be dropped from the calendar \r
-every 400 years.\r
-\r
-Thursday, October 4, 1582 (Julian) was followed immediately by Friday, October 15, 1582 (Gregorian). \r
-*/\r
- if ($year <= 1582) {\r
- if ($year < 1582 || \r
- ($year == 1582 && ($month < 10 || ($month == 10 && $day < 15)))) $greg_correction = 3;\r
- else\r
- $greg_correction = 0;\r
- } else\r
- $greg_correction = 0;\r
- \r
- if($month > 2)\r
- $month -= 2;\r
- else {\r
- $month += 10;\r
- $year--;\r
- }\r
- \r
- $day = ( floor((13 * $month - 1) / 5) +\r
- $day + ($year % 100) +\r
- floor(($year % 100) / 4) +\r
- floor(($year / 100) / 4) - 2 *\r
- floor($year / 100) + 77);\r
- \r
- return (($day - 7 * floor($day / 7))) + $greg_correction;\r
-}\r
-\r
-\r
-/**\r
- Checks for leap year, returns true if it is. No 2-digit year check. Also \r
- handles julian calendar correctly.\r
-*/\r
-function _adodb_is_leap_year($year) \r
-{\r
- if ($year % 4 != 0) return false;\r
- \r
- if ($year % 400 == 0) {\r
- return true;\r
- // if gregorian calendar (>1582), century not-divisible by 400 is not leap\r
- } else if ($year > 1582 && $year % 100 == 0 ) {\r
- return false;\r
- } \r
- \r
- return true;\r
-}\r
-\r
-/**\r
- checks for leap year, returns true if it is. Has 2-digit year check\r
-*/\r
-function adodb_is_leap_year($year) \r
-{\r
- return _adodb_is_leap_year(adodb_year_digit_check($year));\r
-}\r
-\r
-/**\r
- Fix 2-digit years. Works for any century.\r
- Assumes that if 2-digit is more than 30 years in future, then previous century.\r
-*/\r
-function adodb_year_digit_check($y) \r
-{\r
- if ($y < 100) {\r
- \r
- $yr = (integer) date("Y");\r
- $century = (integer) ($yr /100);\r
- \r
- if ($yr%100 > 50) {\r
- $c1 = $century + 1;\r
- $c0 = $century;\r
- } else {\r
- $c1 = $century;\r
- $c0 = $century - 1;\r
- }\r
- $c1 *= 100;\r
- // if 2-digit year is less than 30 years in future, set it to this century\r
- // otherwise if more than 30 years in future, then we set 2-digit year to the prev century.\r
- if (($y + $c1) < $yr+30) $y = $y + $c1;\r
- else $y = $y + $c0*100;\r
- }\r
- return $y;\r
-}\r
-\r
-/**\r
- get local time zone offset from GMT\r
-*/\r
-function adodb_get_gmt_different() \r
-{\r
-static $DIFF;\r
- if (isset($DIFF)) return $DIFF;\r
- \r
- $DIFF = mktime(0,0,0,1,2,1970) - gmmktime(0,0,0,1,2,1970);\r
- return $DIFF;\r
-}\r
-\r
-/**\r
- Returns an array with date info.\r
-*/\r
-function adodb_getdate($d=false,$fast=false)\r
-{\r
- if ($d === false) return getdate();\r
- if (!defined('ADODB_TEST_DATES')) {\r
- if ((abs($d) <= 0x7FFFFFFF)) { // check if number in 32-bit signed range\r
- if (!defined('ADODB_NO_NEGATIVE_TS') || $d >= 0) // if windows, must be +ve integer\r
- return @getdate($d);\r
- }\r
- }\r
- return _adodb_getdate($d);\r
-}\r
-\r
-/**\r
- Low-level function that returns the getdate() array. We have a special\r
- $fast flag, which if set to true, will return fewer array values,\r
- and is much faster as it does not calculate dow, etc.\r
-*/\r
-function _adodb_getdate($origd=false,$fast=false,$is_gmt=false)\r
-{\r
- $d = $origd - ($is_gmt ? 0 : adodb_get_gmt_different());\r
- \r
- $_day_power = 86400;\r
- $_hour_power = 3600;\r
- $_min_power = 60;\r
- \r
- if ($d < -12219321600) $d -= 86400*10; // if 15 Oct 1582 or earlier, gregorian correction \r
- \r
- $_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31);\r
- $_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31);\r
- \r
- if ($d < 0) {\r
- $origd = $d;\r
- // The valid range of a 32bit signed timestamp is typically from \r
- // Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT\r
- for ($a = 1970 ; --$a >= 0;) {\r
- $lastd = $d;\r
- \r
- if ($leaf = _adodb_is_leap_year($a)) {\r
- $d += $_day_power * 366;\r
- } else\r
- $d += $_day_power * 365;\r
- if ($d >= 0) {\r
- $year = $a;\r
- break;\r
- }\r
- }\r
- \r
- $secsInYear = 86400 * ($leaf ? 366 : 365) + $lastd;\r
- \r
- $d = $lastd;\r
- $mtab = ($leaf) ? $_month_table_leaf : $_month_table_normal;\r
- for ($a = 13 ; --$a > 0;) {\r
- $lastd = $d;\r
- $d += $mtab[$a] * $_day_power;\r
- if ($d >= 0) {\r
- $month = $a;\r
- $ndays = $mtab[$a];\r
- break;\r
- }\r
- }\r
- \r
- $d = $lastd;\r
- $day = $ndays + ceil(($d+1) / ($_day_power));\r
-\r
- $d += ($ndays - $day+1)* $_day_power;\r
- $hour = floor($d/$_hour_power);\r
- \r
- } else {\r
- \r
- for ($a = 1970 ;; $a++) {\r
- $lastd = $d;\r
- \r
- if ($leaf = _adodb_is_leap_year($a)) {\r
- $d -= $_day_power * 366;\r
- } else\r
- $d -= $_day_power * 365;\r
- if ($d <= 0) {\r
- $year = $a;\r
- break;\r
- }\r
- }\r
- $secsInYear = $lastd;\r
- $d = $lastd;\r
- $mtab = ($leaf) ? $_month_table_leaf : $_month_table_normal;\r
- for ($a = 1 ; $a <= 12; $a++) {\r
- $lastd = $d;\r
- $d -= $mtab[$a] * $_day_power;\r
- if ($d <= 0) {\r
- $month = $a;\r
- $ndays = $mtab[$a];\r
- break;\r
- }\r
- }\r
- $d = $lastd;\r
- $day = ceil(($d+1) / $_day_power);\r
- $d = $d - ($day-1) * $_day_power;\r
- $hour = floor($d /$_hour_power);\r
- }\r
- \r
- $d -= $hour * $_hour_power;\r
- $min = floor($d/$_min_power);\r
- $secs = $d - $min * $_min_power;\r
- if ($fast) {\r
- return array(\r
- 'seconds' => $secs,\r
- 'minutes' => $min,\r
- 'hours' => $hour,\r
- 'mday' => $day,\r
- 'mon' => $month,\r
- 'year' => $year,\r
- 'yday' => floor($secsInYear/$_day_power),\r
- 'leap' => $leaf,\r
- 'ndays' => $ndays\r
- );\r
- }\r
- \r
- \r
- $dow = adodb_dow($year,$month,$day);\r
-\r
- return array(\r
- 'seconds' => $secs,\r
- 'minutes' => $min,\r
- 'hours' => $hour,\r
- 'mday' => $day,\r
- 'wday' => $dow,\r
- 'mon' => $month,\r
- 'year' => $year,\r
- 'yday' => floor($secsInYear/$_day_power),\r
- 'weekday' => gmdate('l',$_day_power*(3+$dow)),\r
- 'month' => gmdate('F',mktime(0,0,0,$month,2,1971)),\r
- 0 => $origd\r
- );\r
-}\r
-\r
-function adodb_gmdate($fmt,$d=false)\r
-{\r
- return adodb_date($fmt,$d,true);\r
-}\r
-\r
-\r
-/**\r
- Return formatted date based on timestamp $d\r
-*/\r
-function adodb_date($fmt,$d=false,$is_gmt=false)\r
-{\r
- if ($d === false) return date($fmt);\r
- if (!defined('ADODB_TEST_DATES')) {\r
- if ((abs($d) <= 0x7FFFFFFF)) { // check if number in 32-bit signed range\r
- if (!defined('ADODB_NO_NEGATIVE_TS') || $d >= 0) // if windows, must be +ve integer\r
- return @date($fmt,$d);\r
- }\r
- }\r
- $_day_power = 86400;\r
- \r
- $arr = _adodb_getdate($d,true,$is_gmt);\r
- $year = $arr['year'];\r
- $month = $arr['mon'];\r
- $day = $arr['mday'];\r
- $hour = $arr['hours'];\r
- $min = $arr['minutes'];\r
- $secs = $arr['seconds'];\r
- \r
- $max = strlen($fmt);\r
- $dates = '';\r
- \r
- /*\r
- at this point, we have the following integer vars to manipulate:\r
- $year, $month, $day, $hour, $min, $secs\r
- */\r
- for ($i=0; $i < $max; $i++) {\r
- switch($fmt[$i]) {\r
- case 'T': $dates .= date('T',100000);break;\r
- // YEAR\r
- case 'L': $dates .= $arr['leap'] ? '1' : '0'; break;\r
- case 'r': // Thu, 21 Dec 2000 16:01:07 +0200\r
- \r
- $dates .= gmdate('D',$_day_power*(3+adodb_dow($year,$month,$day))).', ' \r
- . ($day<10?' '.$day:$day) . ' '.date('M',mktime(0,0,0,$month,2,1971)).' '.$year.' ';\r
- \r
- if ($hour < 10) $dates .= '0'.$hour; else $dates .= $hour; \r
- \r
- if ($min < 10) $dates .= ':0'.$min; else $dates .= ':'.$min;\r
- \r
- if ($secs < 10) $dates .= ':0'.$secs; else $dates .= ':'.$secs;\r
- \r
- $gmt = adodb_get_gmt_different();\r
- $dates .= sprintf(' %s%04d',($gmt<0)?'+':'-',abs($gmt)/36); break;\r
- \r
- case 'Y': $dates .= $year; break;\r
- case 'y': $dates .= substr($year,strlen($year)-2,2); break;\r
- // MONTH\r
- case 'm': if ($month<10) $dates .= '0'.$month; else $dates .= $month; break;\r
- case 'n': $dates .= $month; break;\r
- case 'M': $dates .= date('M',mktime(0,0,0,$month,2,1971)); break;\r
- case 'F': $dates .= date('F',mktime(0,0,0,$month,2,1971)); break;\r
- // DAY\r
- case 't': $dates .= $arr['ndays']; break;\r
- case 'z': $dates .= $arr['yday']; break;\r
- case 'w': $dates .= adodb_dow($year,$month,$day); break;\r
- case 'l': $dates .= gmdate('l',$_day_power*(3+adodb_dow($year,$month,$day))); break;\r
- case 'D': $dates .= gmdate('D',$_day_power*(3+adodb_dow($year,$month,$day))); break;\r
- case 'j': $dates .= $day; break;\r
- case 'd': if ($day<10) $dates .= '0'.$day; else $dates .= $day; break;\r
- case 'S': \r
- $d10 = $day % 10;\r
- if ($d10 == 1) $dates .= 'st';\r
- else if ($d10 == 2) $dates .= 'nd';\r
- else if ($d10 == 3) $dates .= 'rd';\r
- else $dates .= 'th';\r
- break;\r
- \r
- // HOUR\r
- case 'Z':\r
- $dates .= ($is_gmt) ? 0 : -adodb_get_gmt_different(); break;\r
- case 'O': \r
- $gmt = ($is_gmt) ? 0 : adodb_get_gmt_different();\r
- $dates .= sprintf('%s%04d',($gmt<0)?'+':'-',abs($gmt)/36); break;\r
- \r
- case 'H': \r
- if ($hour < 10) $dates .= '0'.$hour; \r
- else $dates .= $hour; \r
- break;\r
- case 'h': \r
- if ($hour > 12) $hh = $hour - 12; \r
- else {\r
- if ($hour == 0) $hh = '12'; \r
- else $hh = $hour;\r
- }\r
- \r
- if ($hh < 10) $dates .= '0'.$hh;\r
- else $dates .= $hh;\r
- break;\r
- \r
- case 'G': \r
- $dates .= $hour;\r
- break;\r
- \r
- case 'g':\r
- if ($hour > 12) $hh = $hour - 12; \r
- else {\r
- if ($hour == 0) $hh = '12'; \r
- else $hh = $hour; \r
- }\r
- $dates .= $hh;\r
- break;\r
- // MINUTES\r
- case 'i': if ($min < 10) $dates .= '0'.$min; else $dates .= $min; break;\r
- // SECONDS\r
- case 'U': $dates .= $d; break;\r
- case 's': if ($secs < 10) $dates .= '0'.$secs; else $dates .= $secs; break;\r
- // AM/PM\r
- // Note 00:00 to 11:59 is AM, while 12:00 to 23:59 is PM\r
- case 'a':\r
- if ($hour>=12) $dates .= 'pm';\r
- else $dates .= 'am';\r
- break;\r
- case 'A':\r
- if ($hour>=12) $dates .= 'PM';\r
- else $dates .= 'AM';\r
- break;\r
- default:\r
- $dates .= $fmt[$i]; break;\r
- // ESCAPE\r
- case "\\": \r
- $i++;\r
- if ($i < $max) $dates .= $fmt[$i];\r
- break;\r
- }\r
- }\r
- return $dates;\r
-}\r
-\r
-/**\r
- Returns a timestamp given a GMT/UTC time. \r
- Note that $is_dst is not implemented and is ignored.\r
-*/\r
-function adodb_gmmktime($hr,$min,$sec,$mon,$day,$year,$is_dst=false)\r
-{\r
- return adodb_mktime($hr,$min,$sec,$mon,$day,$year,$is_dst,true);\r
-}\r
-\r
-/**\r
- Return a timestamp given a local time. Originally by jackbbs.\r
- Note that $is_dst is not implemented and is ignored.\r
-*/\r
-function adodb_mktime($hr,$min,$sec,$mon,$day,$year,$is_dst=false,$is_gmt=false) \r
-{\r
- if (!defined('ADODB_TEST_DATES')) {\r
- // for windows, we don't check 1970 because with timezone differences, \r
- // 1 Jan 1970 could generate negative timestamp, which is illegal\r
- if (!defined('ADODB_NO_NEGATIVE_TS') || ($year >= 1971)) \r
- if (1901 < $year && $year < 2038)\r
- return @mktime($hr,$min,$sec,$mon,$day,$year);\r
- }\r
- \r
- $gmt_different = ($is_gmt) ? 0 : adodb_get_gmt_different();\r
- \r
- $hr = intval($hr);\r
- $min = intval($min);\r
- $sec = intval($sec);\r
- $mon = intval($mon);\r
- $day = intval($day);\r
- $year = intval($year);\r
- \r
- \r
- $year = adodb_year_digit_check($year);\r
- \r
- if ($mon > 12) {\r
- $y = floor($mon / 12);\r
- $year += $y;\r
- $mon -= $y*12;\r
- }\r
- \r
- $_day_power = 86400;\r
- $_hour_power = 3600;\r
- $_min_power = 60;\r
- \r
- $_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31);\r
- $_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31);\r
- \r
- $_total_date = 0;\r
- if ($year >= 1970) {\r
- for ($a = 1970 ; $a <= $year; $a++) {\r
- $leaf = _adodb_is_leap_year($a);\r
- if ($leaf == true) {\r
- $loop_table = $_month_table_leaf;\r
- $_add_date = 366;\r
- } else {\r
- $loop_table = $_month_table_normal;\r
- $_add_date = 365;\r
- }\r
- if ($a < $year) { \r
- $_total_date += $_add_date;\r
- } else {\r
- for($b=1;$b<$mon;$b++) {\r
- $_total_date += $loop_table[$b];\r
- }\r
- }\r
- }\r
- $_total_date +=$day-1;\r
- $ret = $_total_date * $_day_power + $hr * $_hour_power + $min * $_min_power + $sec + $gmt_different;\r
- \r
- } else {\r
- for ($a = 1969 ; $a >= $year; $a--) {\r
- $leaf = _adodb_is_leap_year($a);\r
- if ($leaf == true) {\r
- $loop_table = $_month_table_leaf;\r
- $_add_date = 366;\r
- } else {\r
- $loop_table = $_month_table_normal;\r
- $_add_date = 365;\r
- }\r
- if ($a > $year) { $_total_date += $_add_date;\r
- } else {\r
- for($b=12;$b>$mon;$b--) {\r
- $_total_date += $loop_table[$b];\r
- }\r
- }\r
- }\r
- $_total_date += $loop_table[$mon] - $day;\r
- \r
- $_day_time = $hr * $_hour_power + $min * $_min_power + $sec;\r
- $_day_time = $_day_power - $_day_time;\r
- $ret = -( $_total_date * $_day_power + $_day_time - $gmt_different);\r
- if ($ret < -12220185600) $ret += 10*86400; // if earlier than 5 Oct 1582 - gregorian correction\r
- else if ($ret < -12219321600) $ret = -12219321600; // if in limbo, reset to 15 Oct 1582.\r
- } \r
- //print " dmy=$day/$mon/$year $hr:$min:$sec => " .$ret;\r
- return $ret;\r
-}\r
-\r
-?>\r
+<?php
+
+/**
+ADOdb Date Library, part of the ADOdb abstraction library
+Download: http://php.weblogs.com/adodb_date_time_library
+
+PHP native date functions use integer timestamps for computations.
+Because of this, dates are restricted to the years 1901-2038 on Unix
+and 1970-2038 on Windows due to integer overflow for dates beyond
+those years. This library overcomes these limitations by replacing the
+native function's signed integers (normally 32-bits) with PHP floating
+point numbers (normally 64-bits).
+
+Dates from 100 A.D. to 3000 A.D. and later
+have been tested. The minimum is 100 A.D. as <100 will invoke the
+2 => 4 digit year conversion. The maximum is billions of years in the
+future, but this is a theoretical limit as the computation of that year
+would take too long with the current implementation of adodb_mktime().
+
+This library replaces native functions as follows:
+
+<pre>
+ getdate() with adodb_getdate()
+ date() with adodb_date()
+ gmdate() with adodb_gmdate()
+ mktime() with adodb_mktime()
+ gmmktime() with adodb_gmmktime()45
+</pre>
+
+The parameters are identical, except that adodb_date() accepts a subset
+of date()'s field formats. Mktime() will convert from local time to GMT,
+and date() will convert from GMT to local time, but daylight savings is
+not handled currently.
+
+This library is independant of the rest of ADOdb, and can be used
+as standalone code.
+
+PERFORMANCE
+
+For high speed, this library uses the native date functions where
+possible, and only switches to PHP code when the dates fall outside
+the 32-bit signed integer range.
+
+GREGORIAN CORRECTION
+
+Pope Gregory shortened October of A.D. 1582 by ten days. Thursday,
+October 4, 1582 (Julian) was followed immediately by Friday, October 15,
+1582 (Gregorian).
+
+Since 0.06, we handle this correctly, so:
+
+adodb_mktime(0,0,0,10,15,1582) - adodb_mktime(0,0,0,10,4,1582)
+ == 24 * 3600 (1 day)
+
+=============================================================================
+
+COPYRIGHT
+
+(c) 2003 John Lim and released under BSD-style license except for code by jackbbs,
+which includes adodb_mktime, adodb_get_gmt_different, adodb_is_leap_year
+and originally found at http://www.php.net/manual/en/function.mktime.php
+
+=============================================================================
+
+BUG REPORTS
+
+These should be posted to the ADOdb forums at
+
+ http://phplens.com/lens/lensforum/topics.php?id=4
+
+=============================================================================
+
+FUNCTION DESCRIPTIONS
+
+
+FUNCTION adodb_getdate($date=false)
+
+Returns an array containing date information, as getdate(), but supports
+dates greater than 1901 to 2038.
+
+
+FUNCTION adodb_date($fmt, $timestamp = false)
+
+Convert a timestamp to a formatted local date. If $timestamp is not defined, the
+current timestamp is used. Unlike the function date(), it supports dates
+outside the 1901 to 2038 range.
+
+The format fields that adodb_date supports:
+
+<pre>
+a - "am" or "pm"
+A - "AM" or "PM"
+d - day of the month, 2 digits with leading zeros; i.e. "01" to "31"
+D - day of the week, textual, 3 letters; e.g. "Fri"
+F - month, textual, long; e.g. "January"
+g - hour, 12-hour format without leading zeros; i.e. "1" to "12"
+G - hour, 24-hour format without leading zeros; i.e. "0" to "23"
+h - hour, 12-hour format; i.e. "01" to "12"
+H - hour, 24-hour format; i.e. "00" to "23"
+i - minutes; i.e. "00" to "59"
+j - day of the month without leading zeros; i.e. "1" to "31"
+l (lowercase 'L') - day of the week, textual, long; e.g. "Friday"
+L - boolean for whether it is a leap year; i.e. "0" or "1"
+m - month; i.e. "01" to "12"
+M - month, textual, 3 letters; e.g. "Jan"
+n - month without leading zeros; i.e. "1" to "12"
+O - Difference to Greenwich time in hours; e.g. "+0200"
+r - RFC 822 formatted date; e.g. "Thu, 21 Dec 2000 16:01:07 +0200"
+s - seconds; i.e. "00" to "59"
+S - English ordinal suffix for the day of the month, 2 characters;
+ i.e. "st", "nd", "rd" or "th"
+t - number of days in the given month; i.e. "28" to "31"
+T - Timezone setting of this machine; e.g. "EST" or "MDT"
+U - seconds since the Unix Epoch (January 1 1970 00:00:00 GMT)
+w - day of the week, numeric, i.e. "0" (Sunday) to "6" (Saturday)
+Y - year, 4 digits; e.g. "1999"
+y - year, 2 digits; e.g. "99"
+z - day of the year; i.e. "0" to "365"
+Z - timezone offset in seconds (i.e. "-43200" to "43200").
+ The offset for timezones west of UTC is always negative,
+ and for those east of UTC is always positive.
+</pre>
+
+Unsupported:
+<pre>
+B - Swatch Internet time
+I (capital i) - "1" if Daylight Savings Time, "0" otherwise.
+W - ISO-8601 week number of year, weeks starting on Monday
+
+</pre>
+
+
+FUNCTION adodb_gmdate($fmt, $timestamp = false)
+
+Convert a timestamp to a formatted GMT date. If $timestamp is not defined, the
+current timestamp is used. Unlike the function date(), it supports dates
+outside the 1901 to 2038 range.
+
+
+FUNCTION adodb_mktime($hr, $min, $sec, $month, $day, $year)
+
+Converts a local date to a unix timestamp. Unlike the function mktime(), it supports
+dates outside the 1901 to 2038 range. Differs from mktime() in that all parameters
+are currently compulsory.
+
+FUNCTION adodb_gmmktime($hr, $min, $sec, $month, $day, $year)
+
+Converts a gmt date to a unix timestamp. Unlike the function gmmktime(), it supports
+dates outside the 1901 to 2038 range. Differs from gmmktime() in that all parameters
+are currently compulsory.
+
+=============================================================================
+
+NOTES
+
+Useful url for generating test timestamps:
+ http://www.4webhelp.net/us/timestamp.php
+
+Possible future optimizations include
+
+a. Using an algorithm similar to Plauger's in "The Standard C Library"
+(page 428, xttotm.c _Ttotm() function). Plauger's algorithm will not
+work outside 32-bit signed range, so i decided not to implement it.
+
+b. Iterate over a block of years (say 12) when searching for the
+correct year.
+
+c. Implement daylight savings, which looks awfully complicated, see
+ http://webexhibits.org/daylightsaving/
+
+
+CHANGELOG
+- 3 March 2003 0.08
+Added support for 'S' adodb_date() format char. Added constant ADODB_ALLOW_NEGATIVE_TS
+if you want PHP to handle negative timestamps between 1901 to 1969.
+
+- 27 Feb 2003 0.07
+All negative numbers handled by adodb now because of RH 7.3+ problems.
+See http://bugs.php.net/bug.php?id=20048&edit=2
+
+- 4 Feb 2003 0.06
+Fixed a typo, 1852 changed to 1582! This means that pre-1852 dates
+are now correctly handled.
+
+- 29 Jan 2003 0.05
+
+Leap year checking differs under Julian calendar (pre 1582). Also
+leap year code optimized by checking for most common case first.
+
+We also handle month overflow correctly in mktime (eg month set to 13).
+
+Day overflow for less than one month's days is supported.
+
+- 28 Jan 2003 0.04
+
+Gregorian correction handled. In PHP5, we might throw an error if
+mktime uses invalid dates around 5-14 Oct 1582. Released with ADOdb 3.10.
+Added limbo 5-14 Oct 1582 check, when we set to 15 Oct 1582.
+
+- 27 Jan 2003 0.03
+
+Fixed some more month problems due to gmt issues. Added constant ADODB_DATE_VERSION.
+Fixed calculation of days since start of year for <1970.
+
+- 27 Jan 2003 0.02
+
+Changed _adodb_getdate() to inline leap year checking for better performance.
+Fixed problem with time-zones west of GMT +0000.
+
+- 24 Jan 2003 0.01
+
+First implementation.
+*/
+
+
+/* Initialization */
+
+/*
+ Version Number
+*/
+define('ADODB_DATE_VERSION',0.08);
+
+/*
+ We check for Windows as only +ve ints are accepted as dates on Windows.
+
+ Apparently this problem happens also with Linux, RH 7.3 and later!
+
+ glibc-2.2.5-34 and greater has been changed to return -1 for dates <
+ 1970. This used to work. The problem exists with RedHat 7.3 and 8.0
+ echo (mktime(0, 0, 0, 1, 1, 1960)); // prints -1
+
+ References:
+ http://bugs.php.net/bug.php?id=20048&edit=2
+ http://lists.debian.org/debian-glibc/2002/debian-glibc-200205/msg00010.html
+*/
+
+if (!defined('ADODB_ALLOW_NEGATIVE_TS')) define('ADODB_NO_NEGATIVE_TS',1);
+
+function adodb_date_test_date($y1,$m)
+{
+ //print " $y1/$m ";
+ $t = adodb_mktime(0,0,0,$m,13,$y1);
+ if ("$y1-$m-13 00:00:00" != adodb_date('Y-n-d H:i:s',$t)) {
+ print "<b>$y1 error</b><br>";
+ return false;
+ }
+ return true;
+}
+/**
+ Test Suite
+*/
+function adodb_date_test()
+{
+
+ error_reporting(E_ALL);
+ print "<h4>Testing adodb_date and adodb_mktime. version=".ADODB_DATE_VERSION. "</h4>";
+ set_time_limit(0);
+ $fail = false;
+
+ // This flag disables calling of PHP native functions, so we can properly test the code
+ if (!defined('ADODB_TEST_DATES')) define('ADODB_TEST_DATES',1);
+
+ print "<p>Testing gregorian <=> julian conversion<p>";
+ $t = adodb_mktime(0,0,0,10,11,1492);
+ //http://www.holidayorigins.com/html/columbus_day.html - Friday check
+ if (!(adodb_date('D Y-m-d',$t) == 'Fri 1492-10-11')) print 'Error in Columbus landing<br>';
+
+ $t = adodb_mktime(0,0,0,2,29,1500);
+ if (!(adodb_date('Y-m-d',$t) == '1500-02-29')) print 'Error in julian leap years<br>';
+
+ $t = adodb_mktime(0,0,0,2,29,1700);
+ if (!(adodb_date('Y-m-d',$t) == '1700-03-01')) print 'Error in gregorian leap years<br>';
+
+ print adodb_mktime(0,0,0,10,4,1582).' ';
+ print adodb_mktime(0,0,0,10,15,1582);
+ $diff = (adodb_mktime(0,0,0,10,15,1582) - adodb_mktime(0,0,0,10,4,1582));
+ if ($diff != 3600*24) print " <b>Error in gregorian correction = ".($diff/3600/24)." days </b><br>";
+
+ print " 15 Oct 1582, Fri=".(adodb_dow(1582,10,15) == 5 ? 'Fri' : '<b>Error</b>')."<br>";
+ print " 4 Oct 1582, Thu=".(adodb_dow(1582,10,4) == 4 ? 'Thu' : '<b>Error</b>')."<br>";
+
+ print "<p>Testing overflow<p>";
+
+ $t = adodb_mktime(0,0,0,3,33,1965);
+ if (!(adodb_date('Y-m-d',$t) == '1965-04-02')) print 'Error in day overflow 1 <br>';
+ $t = adodb_mktime(0,0,0,4,33,1971);
+ if (!(adodb_date('Y-m-d',$t) == '1971-05-03')) print 'Error in day overflow 2 <br>';
+ $t = adodb_mktime(0,0,0,1,60,1965);
+ if (!(adodb_date('Y-m-d',$t) == '1965-03-01')) print 'Error in day overflow 3 '.adodb_date('Y-m-d',$t).' <br>';
+ $t = adodb_mktime(0,0,0,12,32,1965);
+ if (!(adodb_date('Y-m-d',$t) == '1966-01-01')) print 'Error in day overflow 4 '.adodb_date('Y-m-d',$t).' <br>';
+ $t = adodb_mktime(0,0,0,12,63,1965);
+ if (!(adodb_date('Y-m-d',$t) == '1966-02-01')) print 'Error in day overflow 5 '.adodb_date('Y-m-d',$t).' <br>';
+ $t = adodb_mktime(0,0,0,13,3,1965);
+ if (!(adodb_date('Y-m-d',$t) == '1966-01-03')) print 'Error in mth overflow 1 <br>';
+
+ print "Testing 2-digit => 4-digit year conversion<p>";
+ if (adodb_year_digit_check(00) != 2000) print "Err 2-digit 2000<br>";
+ if (adodb_year_digit_check(10) != 2010) print "Err 2-digit 2010<br>";
+ if (adodb_year_digit_check(20) != 2020) print "Err 2-digit 2020<br>";
+ if (adodb_year_digit_check(30) != 2030) print "Err 2-digit 2030<br>";
+ if (adodb_year_digit_check(40) != 1940) print "Err 2-digit 1940<br>";
+ if (adodb_year_digit_check(50) != 1950) print "Err 2-digit 1950<br>";
+ if (adodb_year_digit_check(90) != 1990) print "Err 2-digit 1990<br>";
+
+ // Test string formating
+ print "<p>Testing date formating</p>";
+ $fmt = '\d\a\t\e T Y-m-d H:i:s a A d D F g G h H i j l L m M n O \R\F\C822 r s t U w y Y z Z 2003';
+ $s1 = date($fmt,0);
+ $s2 = adodb_date($fmt,0);
+ if ($s1 != $s2) {
+ print " date() 0 failed<br>$s1<br>$s2<br>";
+ }
+ flush();
+ for ($i=100; --$i > 0; ) {
+
+ $ts = 3600.0*((rand()%60000)+(rand()%60000))+(rand()%60000);
+ $s1 = date($fmt,$ts);
+ $s2 = adodb_date($fmt,$ts);
+ //print "$s1 <br>$s2 <p>";
+ $pos = strcmp($s1,$s2);
+
+ if (($s1) != ($s2)) {
+ for ($j=0,$k=strlen($s1); $j < $k; $j++) {
+ if ($s1[$j] != $s2[$j]) {
+ print substr($s1,$j).' ';
+ break;
+ }
+ }
+ print "<b>Error date(): $ts<br><pre>
+ \"$s1\" (date len=".strlen($s1).")
+ \"$s2\" (adodb_date len=".strlen($s2).")</b></pre><br>";
+ $fail = true;
+ }
+
+ $a1 = getdate($ts);
+ $a2 = adodb_getdate($ts);
+ $rez = array_diff($a1,$a2);
+ if (sizeof($rez)>0) {
+ print "<b>Error getdate() $ts</b><br>";
+ print_r($a1);
+ print "<br>";
+ print_r($a2);
+ print "<p>";
+ $fail = true;
+ }
+ }
+
+ // Test generation of dates outside 1901-2038
+ print "<p>Testing random dates between 100 and 4000</p>";
+ adodb_date_test_date(100,1);
+ for ($i=100; --$i >= 0;) {
+ $y1 = 100+rand(0,1970-100);
+ $m = rand(1,12);
+ adodb_date_test_date($y1,$m);
+
+ $y1 = 3000-rand(0,3000-1970);
+ adodb_date_test_date($y1,$m);
+ }
+ print '<p>';
+ $start = 1960+rand(0,10);
+ $yrs = 12;
+ $i = 365.25*86400*($start-1970);
+ $offset = 36000+rand(10000,60000);
+ $max = 365*$yrs*86400;
+ $lastyear = 0;
+
+ // we generate a timestamp, convert it to a date, and convert it back to a timestamp
+ // and check if the roundtrip broke the original timestamp value.
+ print "Testing $start to ".($start+$yrs).", or $max seconds, offset=$offset: ";
+
+ for ($max += $i; $i < $max; $i += $offset) {
+ $ret = adodb_date('m,d,Y,H,i,s',$i);
+ $arr = explode(',',$ret);
+ if ($lastyear != $arr[2]) {
+ $lastyear = $arr[2];
+ print " $lastyear ";
+ flush();
+ }
+ $newi = adodb_mktime($arr[3],$arr[4],$arr[5],$arr[0],$arr[1],$arr[2]);
+ if ($i != $newi) {
+ print "Error at $i, adodb_mktime returned $newi ($ret)";
+ $fail = true;
+ break;
+ }
+ }
+
+ if (!$fail) print "<p>Passed !</p>";
+ else print "<p><b>Failed</b> :-(</p>";
+}
+
+/**
+ Returns day of week, 0 = Sunday,... 6=Saturday.
+ Algorithm from PEAR::Date_Calc
+*/
+function adodb_dow($year, $month, $day)
+{
+/*
+Pope Gregory removed 10 days - October 5 to October 14 - from the year 1582 and
+proclaimed that from that time onwards 3 days would be dropped from the calendar
+every 400 years.
+
+Thursday, October 4, 1582 (Julian) was followed immediately by Friday, October 15, 1582 (Gregorian).
+*/
+ if ($year <= 1582) {
+ if ($year < 1582 ||
+ ($year == 1582 && ($month < 10 || ($month == 10 && $day < 15)))) $greg_correction = 3;
+ else
+ $greg_correction = 0;
+ } else
+ $greg_correction = 0;
+
+ if($month > 2)
+ $month -= 2;
+ else {
+ $month += 10;
+ $year--;
+ }
+
+ $day = ( floor((13 * $month - 1) / 5) +
+ $day + ($year % 100) +
+ floor(($year % 100) / 4) +
+ floor(($year / 100) / 4) - 2 *
+ floor($year / 100) + 77);
+
+ return (($day - 7 * floor($day / 7))) + $greg_correction;
+}
+
+
+/**
+ Checks for leap year, returns true if it is. No 2-digit year check. Also
+ handles julian calendar correctly.
+*/
+function _adodb_is_leap_year($year)
+{
+ if ($year % 4 != 0) return false;
+
+ if ($year % 400 == 0) {
+ return true;
+ // if gregorian calendar (>1582), century not-divisible by 400 is not leap
+ } else if ($year > 1582 && $year % 100 == 0 ) {
+ return false;
+ }
+
+ return true;
+}
+
+/**
+ checks for leap year, returns true if it is. Has 2-digit year check
+*/
+function adodb_is_leap_year($year)
+{
+ return _adodb_is_leap_year(adodb_year_digit_check($year));
+}
+
+/**
+ Fix 2-digit years. Works for any century.
+ Assumes that if 2-digit is more than 30 years in future, then previous century.
+*/
+function adodb_year_digit_check($y)
+{
+ if ($y < 100) {
+
+ $yr = (integer) date("Y");
+ $century = (integer) ($yr /100);
+
+ if ($yr%100 > 50) {
+ $c1 = $century + 1;
+ $c0 = $century;
+ } else {
+ $c1 = $century;
+ $c0 = $century - 1;
+ }
+ $c1 *= 100;
+ // if 2-digit year is less than 30 years in future, set it to this century
+ // otherwise if more than 30 years in future, then we set 2-digit year to the prev century.
+ if (($y + $c1) < $yr+30) $y = $y + $c1;
+ else $y = $y + $c0*100;
+ }
+ return $y;
+}
+
+/**
+ get local time zone offset from GMT
+*/
+function adodb_get_gmt_different()
+{
+static $DIFF;
+ if (isset($DIFF)) return $DIFF;
+
+ $DIFF = mktime(0,0,0,1,2,1970) - gmmktime(0,0,0,1,2,1970);
+ return $DIFF;
+}
+
+/**
+ Returns an array with date info.
+*/
+function adodb_getdate($d=false,$fast=false)
+{
+ if ($d === false) return getdate();
+ if (!defined('ADODB_TEST_DATES')) {
+ if ((abs($d) <= 0x7FFFFFFF)) { // check if number in 32-bit signed range
+ if (!defined('ADODB_NO_NEGATIVE_TS') || $d >= 0) // if windows, must be +ve integer
+ return @getdate($d);
+ }
+ }
+ return _adodb_getdate($d);
+}
+
+/**
+ Low-level function that returns the getdate() array. We have a special
+ $fast flag, which if set to true, will return fewer array values,
+ and is much faster as it does not calculate dow, etc.
+*/
+function _adodb_getdate($origd=false,$fast=false,$is_gmt=false)
+{
+ $d = $origd - ($is_gmt ? 0 : adodb_get_gmt_different());
+
+ $_day_power = 86400;
+ $_hour_power = 3600;
+ $_min_power = 60;
+
+ if ($d < -12219321600) $d -= 86400*10; // if 15 Oct 1582 or earlier, gregorian correction
+
+ $_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31);
+ $_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31);
+
+ if ($d < 0) {
+ $origd = $d;
+ // The valid range of a 32bit signed timestamp is typically from
+ // Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT
+ for ($a = 1970 ; --$a >= 0;) {
+ $lastd = $d;
+
+ if ($leaf = _adodb_is_leap_year($a)) {
+ $d += $_day_power * 366;
+ } else
+ $d += $_day_power * 365;
+ if ($d >= 0) {
+ $year = $a;
+ break;
+ }
+ }
+
+ $secsInYear = 86400 * ($leaf ? 366 : 365) + $lastd;
+
+ $d = $lastd;
+ $mtab = ($leaf) ? $_month_table_leaf : $_month_table_normal;
+ for ($a = 13 ; --$a > 0;) {
+ $lastd = $d;
+ $d += $mtab[$a] * $_day_power;
+ if ($d >= 0) {
+ $month = $a;
+ $ndays = $mtab[$a];
+ break;
+ }
+ }
+
+ $d = $lastd;
+ $day = $ndays + ceil(($d+1) / ($_day_power));
+
+ $d += ($ndays - $day+1)* $_day_power;
+ $hour = floor($d/$_hour_power);
+
+ } else {
+
+ for ($a = 1970 ;; $a++) {
+ $lastd = $d;
+
+ if ($leaf = _adodb_is_leap_year($a)) {
+ $d -= $_day_power * 366;
+ } else
+ $d -= $_day_power * 365;
+ if ($d <= 0) {
+ $year = $a;
+ break;
+ }
+ }
+ $secsInYear = $lastd;
+ $d = $lastd;
+ $mtab = ($leaf) ? $_month_table_leaf : $_month_table_normal;
+ for ($a = 1 ; $a <= 12; $a++) {
+ $lastd = $d;
+ $d -= $mtab[$a] * $_day_power;
+ if ($d <= 0) {
+ $month = $a;
+ $ndays = $mtab[$a];
+ break;
+ }
+ }
+ $d = $lastd;
+ $day = ceil(($d+1) / $_day_power);
+ $d = $d - ($day-1) * $_day_power;
+ $hour = floor($d /$_hour_power);
+ }
+
+ $d -= $hour * $_hour_power;
+ $min = floor($d/$_min_power);
+ $secs = $d - $min * $_min_power;
+ if ($fast) {
+ return array(
+ 'seconds' => $secs,
+ 'minutes' => $min,
+ 'hours' => $hour,
+ 'mday' => $day,
+ 'mon' => $month,
+ 'year' => $year,
+ 'yday' => floor($secsInYear/$_day_power),
+ 'leap' => $leaf,
+ 'ndays' => $ndays
+ );
+ }
+
+
+ $dow = adodb_dow($year,$month,$day);
+
+ return array(
+ 'seconds' => $secs,
+ 'minutes' => $min,
+ 'hours' => $hour,
+ 'mday' => $day,
+ 'wday' => $dow,
+ 'mon' => $month,
+ 'year' => $year,
+ 'yday' => floor($secsInYear/$_day_power),
+ 'weekday' => gmdate('l',$_day_power*(3+$dow)),
+ 'month' => gmdate('F',mktime(0,0,0,$month,2,1971)),
+ 0 => $origd
+ );
+}
+
+function adodb_gmdate($fmt,$d=false)
+{
+ return adodb_date($fmt,$d,true);
+}
+
+
+/**
+ Return formatted date based on timestamp $d
+*/
+function adodb_date($fmt,$d=false,$is_gmt=false)
+{
+ if ($d === false) return date($fmt);
+ if (!defined('ADODB_TEST_DATES')) {
+ if ((abs($d) <= 0x7FFFFFFF)) { // check if number in 32-bit signed range
+ if (!defined('ADODB_NO_NEGATIVE_TS') || $d >= 0) // if windows, must be +ve integer
+ return @date($fmt,$d);
+ }
+ }
+ $_day_power = 86400;
+
+ $arr = _adodb_getdate($d,true,$is_gmt);
+ $year = $arr['year'];
+ $month = $arr['mon'];
+ $day = $arr['mday'];
+ $hour = $arr['hours'];
+ $min = $arr['minutes'];
+ $secs = $arr['seconds'];
+
+ $max = strlen($fmt);
+ $dates = '';
+
+ /*
+ at this point, we have the following integer vars to manipulate:
+ $year, $month, $day, $hour, $min, $secs
+ */
+ for ($i=0; $i < $max; $i++) {
+ switch($fmt[$i]) {
+ case 'T': $dates .= date('T',100000);break;
+ // YEAR
+ case 'L': $dates .= $arr['leap'] ? '1' : '0'; break;
+ case 'r': // Thu, 21 Dec 2000 16:01:07 +0200
+
+ $dates .= gmdate('D',$_day_power*(3+adodb_dow($year,$month,$day))).', '
+ . ($day<10?' '.$day:$day) . ' '.date('M',mktime(0,0,0,$month,2,1971)).' '.$year.' ';
+
+ if ($hour < 10) $dates .= '0'.$hour; else $dates .= $hour;
+
+ if ($min < 10) $dates .= ':0'.$min; else $dates .= ':'.$min;
+
+ if ($secs < 10) $dates .= ':0'.$secs; else $dates .= ':'.$secs;
+
+ $gmt = adodb_get_gmt_different();
+ $dates .= sprintf(' %s%04d',($gmt<0)?'+':'-',abs($gmt)/36); break;
+
+ case 'Y': $dates .= $year; break;
+ case 'y': $dates .= substr($year,strlen($year)-2,2); break;
+ // MONTH
+ case 'm': if ($month<10) $dates .= '0'.$month; else $dates .= $month; break;
+ case 'n': $dates .= $month; break;
+ case 'M': $dates .= date('M',mktime(0,0,0,$month,2,1971)); break;
+ case 'F': $dates .= date('F',mktime(0,0,0,$month,2,1971)); break;
+ // DAY
+ case 't': $dates .= $arr['ndays']; break;
+ case 'z': $dates .= $arr['yday']; break;
+ case 'w': $dates .= adodb_dow($year,$month,$day); break;
+ case 'l': $dates .= gmdate('l',$_day_power*(3+adodb_dow($year,$month,$day))); break;
+ case 'D': $dates .= gmdate('D',$_day_power*(3+adodb_dow($year,$month,$day))); break;
+ case 'j': $dates .= $day; break;
+ case 'd': if ($day<10) $dates .= '0'.$day; else $dates .= $day; break;
+ case 'S':
+ $d10 = $day % 10;
+ if ($d10 == 1) $dates .= 'st';
+ else if ($d10 == 2) $dates .= 'nd';
+ else if ($d10 == 3) $dates .= 'rd';
+ else $dates .= 'th';
+ break;
+
+ // HOUR
+ case 'Z':
+ $dates .= ($is_gmt) ? 0 : -adodb_get_gmt_different(); break;
+ case 'O':
+ $gmt = ($is_gmt) ? 0 : adodb_get_gmt_different();
+ $dates .= sprintf('%s%04d',($gmt<0)?'+':'-',abs($gmt)/36); break;
+
+ case 'H':
+ if ($hour < 10) $dates .= '0'.$hour;
+ else $dates .= $hour;
+ break;
+ case 'h':
+ if ($hour > 12) $hh = $hour - 12;
+ else {
+ if ($hour == 0) $hh = '12';
+ else $hh = $hour;
+ }
+
+ if ($hh < 10) $dates .= '0'.$hh;
+ else $dates .= $hh;
+ break;
+
+ case 'G':
+ $dates .= $hour;
+ break;
+
+ case 'g':
+ if ($hour > 12) $hh = $hour - 12;
+ else {
+ if ($hour == 0) $hh = '12';
+ else $hh = $hour;
+ }
+ $dates .= $hh;
+ break;
+ // MINUTES
+ case 'i': if ($min < 10) $dates .= '0'.$min; else $dates .= $min; break;
+ // SECONDS
+ case 'U': $dates .= $d; break;
+ case 's': if ($secs < 10) $dates .= '0'.$secs; else $dates .= $secs; break;
+ // AM/PM
+ // Note 00:00 to 11:59 is AM, while 12:00 to 23:59 is PM
+ case 'a':
+ if ($hour>=12) $dates .= 'pm';
+ else $dates .= 'am';
+ break;
+ case 'A':
+ if ($hour>=12) $dates .= 'PM';
+ else $dates .= 'AM';
+ break;
+ default:
+ $dates .= $fmt[$i]; break;
+ // ESCAPE
+ case "\\":
+ $i++;
+ if ($i < $max) $dates .= $fmt[$i];
+ break;
+ }
+ }
+ return $dates;
+}
+
+/**
+ Returns a timestamp given a GMT/UTC time.
+ Note that $is_dst is not implemented and is ignored.
+*/
+function adodb_gmmktime($hr,$min,$sec,$mon,$day,$year,$is_dst=false)
+{
+ return adodb_mktime($hr,$min,$sec,$mon,$day,$year,$is_dst,true);
+}
+
+/**
+ Return a timestamp given a local time. Originally by jackbbs.
+ Note that $is_dst is not implemented and is ignored.
+*/
+function adodb_mktime($hr,$min,$sec,$mon,$day,$year,$is_dst=false,$is_gmt=false)
+{ if (!defined('ADODB_TEST_DATES')) {
+ // for windows, we don't check 1970 because with timezone differences,
+ // 1 Jan 1970 could generate negative timestamp, which is illegal
+ if (!defined('ADODB_NO_NEGATIVE_TS') || ($year >= 1971))
+ if (1901 < $year && $year < 2038)
+ return @mktime($hr,$min,$sec,$mon,$day,$year);
+ }
+
+ $gmt_different = ($is_gmt) ? 0 : adodb_get_gmt_different();
+
+ $hr = intval($hr);
+ $min = intval($min);
+ $sec = intval($sec);
+ $mon = intval($mon);
+ $day = intval($day);
+ $year = intval($year);
+
+
+ $year = adodb_year_digit_check($year);
+
+ if ($mon > 12) {
+ $y = floor($mon / 12);
+ $year += $y;
+ $mon -= $y*12;
+ }
+
+ $_day_power = 86400;
+ $_hour_power = 3600;
+ $_min_power = 60;
+
+ $_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31);
+ $_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31);
+
+ $_total_date = 0;
+ if ($year >= 1970) {
+ for ($a = 1970 ; $a <= $year; $a++) {
+ $leaf = _adodb_is_leap_year($a);
+ if ($leaf == true) {
+ $loop_table = $_month_table_leaf;
+ $_add_date = 366;
+ } else {
+ $loop_table = $_month_table_normal;
+ $_add_date = 365;
+ }
+ if ($a < $year) {
+ $_total_date += $_add_date;
+ } else {
+ for($b=1;$b<$mon;$b++) {
+ $_total_date += $loop_table[$b];
+ }
+ }
+ }
+ $_total_date +=$day-1;
+ $ret = $_total_date * $_day_power + $hr * $_hour_power + $min * $_min_power + $sec + $gmt_different;
+
+ } else {
+ for ($a = 1969 ; $a >= $year; $a--) {
+ $leaf = _adodb_is_leap_year($a);
+ if ($leaf == true) {
+ $loop_table = $_month_table_leaf;
+ $_add_date = 366;
+ } else {
+ $loop_table = $_month_table_normal;
+ $_add_date = 365;
+ }
+ if ($a > $year) { $_total_date += $_add_date;
+ } else {
+ for($b=12;$b>$mon;$b--) {
+ $_total_date += $loop_table[$b];
+ }
+ }
+ }
+ $_total_date += $loop_table[$mon] - $day;
+
+ $_day_time = $hr * $_hour_power + $min * $_min_power + $sec;
+ $_day_time = $_day_power - $_day_time;
+ $ret = -( $_total_date * $_day_power + $_day_time - $gmt_different);
+ if ($ret < -12220185600) $ret += 10*86400; // if earlier than 5 Oct 1582 - gregorian correction
+ else if ($ret < -12219321600) $ret = -12219321600; // if in limbo, reset to 15 Oct 1582.
+ }
+ //print " dmy=$day/$mon/$year $hr:$min:$sec => " .$ret;
+ return $ret;
+}
+
+?>
projects / moodle.git / commitdiff