From: tokul at users dot sourceforge dot net Operating system: Linux Debian Sarge PHP version: 5CVS-2006-07-25 (snap) PHP Bug Type: Reproducible crash Bug description: variable name and cookie name match breaks script execution
Description: ------------ If PHP register_globals are turned on and code tries to unset globals, unset command can break script execution. It is possible that issue is not in unset() command. Maybe it is caused by some foreach() function changes or some session/cookie handling changes. Issue was reported on php-qa mailing list by Phil Driscoll (http://news.php.net/php.qa/26841). PHP 5.2.0rc2-dev (200607251030) snapshot. Compiled as Apache2 DSO module. register_globals are turned on in php.ini. I can provide configure command and php.ini settings, if you need them. error_reporting is set to E_ALL Can't reproduce it in 5.1.4 or older versions. Reproduce code: --------------- <?php if (!isset($_COOKIE['test'])) { setcookie('test','somevalue'); echo 'reload script'; } else { foreach ($_REQUEST as $test => $value) { // code crashes on unset() call unset($GLOBALS[$test]); } echo time(); } ?> Expected result: ---------------- script should display 'reload script' on first load and timestamp on second load. Actual result: -------------- script displays 'reload script' on first load (cookie is not set) and crashes without any visible error when it is reloaded. -- Edit bug report at http://bugs.php.net/?id=38211&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=38211&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=38211&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=38211&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=38211&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=38211&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=38211&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=38211&r=needscript Try newer version: http://bugs.php.net/fix.php?id=38211&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=38211&r=support Expected behavior: http://bugs.php.net/fix.php?id=38211&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=38211&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=38211&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=38211&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38211&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=38211&r=dst IIS Stability: http://bugs.php.net/fix.php?id=38211&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=38211&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=38211&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=38211&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=38211&r=mysqlcfg
