From: mikeb at tracersinfo dot com Operating system: Win32 (XP2) and Linux PHP version: 5.1.2 PHP Bug Type: Date/time related Bug description: strtotime unconditional false return on now <= 0
Description: ------------ Despite recent modifications to the date functions that now allow negative timestamps in both of my environments (Win32 and Linux) [THANK YOU, btw!], strtotime() returns false any time the "now" parameter evaluates to 0 or less, even when it clearly demonstrates it can perform the calculation requested and the date/time in question is within reasonable bounds. Reproduce code: --------------- <?php $a["mktime(1, 2, 3, 4, 5, 1967)"] = mktime(1, 2, 3, 4, 5, 1967); $a["strtotime('-10 years', 0)"] = strtotime('-10 years', 0); $a["strtotime('-10 years', 1)"] = strtotime('-10 years', 1); $a["strtotime('+10 years', 0)"] = strtotime('+10 years', 0); $a["strtotime('+10 years', 1)"] = strtotime('+10 years', 1); $a["gmmktime(0, 0, 0, 1, 1, 1970)"] = gmmktime(0, 0, 0, 1, 1, 1970); $a["strtotime('-10 years', gmmktime(0, 0, 0, 1, 1, 1970))"] = strtotime('-10 years', gmmktime(0, 0, 0, 1, 1, 1970)); $a["strtotime('12/31/1969 19:00:00 -10 years')"] = strtotime('12/31/1969 19:00:00 -10 years'); $a["strtotime('+10 years', gmmktime(0, 0, 0, 1, 1, 1965))"] = strtotime('+10 years', gmmktime(0, 0, 0, 1, 1, 1965)); $a["strtotime('12/31/1964 19:00:00 +10 years')"] = strtotime('12/31/1964 19:00:00 +10 years'); var_dump($a); ?> Expected result: ---------------- array(10) { ["mktime(1, 2, 3, 4, 5, 1967)"]=> int(-86551077) ["strtotime('-10 years', 0)"]=> int(-315619200) <------ ["strtotime('-10 years', 1)"]=> int(-315619199) ["strtotime('+10 years', 0)"]=> int(315532800) <------- ["strtotime('+10 years', 1)"]=> int(315532801) ["gmmktime(0, 0, 0, 1, 1, 1970)"]=> int(0) ["strtotime('-10 years', gmmktime(0, 0, 0, 1, 1, 1970))"]=> int(-315619200) <------ ["strtotime('12/31/1969 19:00:00 -10 years')"]=> int(-315619200) ["strtotime('+10 years', gmmktime(0, 0, 0, 1, 1, 1965))"]=> int(157766400) <------ ["strtotime('12/31/1964 19:00:00 +10 years')"]=> int(157766400) } Actual result: -------------- array(10) { ["mktime(1, 2, 3, 4, 5, 1967)"]=> int(-86551077) ["strtotime('-10 years', 0)"]=> bool(false) <------ ["strtotime('-10 years', 1)"]=> int(-315619199) ["strtotime('+10 years', 0)"]=> bool(false) <------ ["strtotime('+10 years', 1)"]=> int(315532801) ["gmmktime(0, 0, 0, 1, 1, 1970)"]=> int(0) ["strtotime('-10 years', gmmktime(0, 0, 0, 1, 1, 1970))"]=> bool(false) <------ ["strtotime('12/31/1969 19:00:00 -10 years')"]=> int(-315619200) ["strtotime('+10 years', gmmktime(0, 0, 0, 1, 1, 1965))"]=> bool(false) <------ ["strtotime('12/31/1964 19:00:00 +10 years')"]=> int(157766400) } -- Edit bug report at http://bugs.php.net/?id=36638&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=36638&r=trysnapshot44 Try a CVS snapshot (PHP 5.1): http://bugs.php.net/fix.php?id=36638&r=trysnapshot51 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=36638&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=36638&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=36638&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=36638&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=36638&r=needscript Try newer version: http://bugs.php.net/fix.php?id=36638&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=36638&r=support Expected behavior: http://bugs.php.net/fix.php?id=36638&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=36638&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=36638&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=36638&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36638&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=36638&r=dst IIS Stability: http://bugs.php.net/fix.php?id=36638&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=36638&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=36638&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=36638&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=36638&r=mysqlcfg