#43080 [NEW]: Global object is null before destroying it.

From: joustin at post dot pl Operating system: win32 PHP version: 5.2.4 PHP Bug Type: Class/Object related Bug description: Global object is null before destroying it. Description: ------------ This is quite interesting. Appeared after upgrading to 5.2.4 and broke my code. It's great that objects are finally destroyed in the right order, but a whole lot of code still relies on "destroy all" or "cleanup" functions. What struck me is that as of 5.2.4, my object in the moment of calling it's destructor, in global scope, appears as NULL. I've also devised a simple and dirty workaround, which is found in the code below. Thanks! Reproduce code: --------------- class foo { function __construct(){ echo "Constructed foo\n"; } function getDb(){ echo "Getting DB"; } function __destruct(){ echo "Destructing foo\n"; echo "Trying to destruct bar\n"; global $bar; if(false){ // DIRTY WORKAROUND global $foo; $foo = $this; } $bar->__destruct(); } } class bar { protected $destroyed = false; function __construct(){ echo "Constructed bar\n"; } function __destruct(){ if(!$this->destroyed){ echo " Destructing bar\n"; global $foo; echo " Our global parent, foo, is of type ".gettype($foo)."\n"; $this->destroyed = true; } } } $bar = new bar(); $foo = new foo(); echo "--\nScript finishes...\n"; Expected result: ---------------- Constructed bar Constructed foo -- Script finishes... Destructing foo Trying to destruct bar Destructing bar Our global parent, foo, is of type object Actual result: -------------- Constructed bar Constructed foo -- Script finishes... Destructing foo Trying to destruct bar Destructing bar Our global parent, foo, is of type NULL -- Edit bug report at http://bugs.php.net/?id=43080&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=43080&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=43080&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=43080&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=43080&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=43080&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=43080&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=43080&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=43080&r=needscript Try newer version: http://bugs.php.net/fix.php?id=43080&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=43080&r=support Expected behavior: http://bugs.php.net/fix.php?id=43080&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=43080&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=43080&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=43080&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43080&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=43080&r=dst IIS Stability: http://bugs.php.net/fix.php?id=43080&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=43080&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=43080&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=43080&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=43080&r=mysqlcfg