From: sam at liddicott dot com Operating system: Linux PHP version: 4.4.0 PHP Bug Type: Scripting Engine problem Bug description: === is wrong for objects and also stupid
Description: ------------ === does not compare two objects for identity, it compares the values of their fields, and recursively at that! It gives wrong answers and in some cases fails altogether! Would you believe that === reports two different objects as being the same object, when they are not references? Why can't it just check if they have the same storage address, that should be quick, painless and accurate! There should be some way to tell when two object references refer to the same object (apart hack in an extra field and see if it appears in the other) Reproduce code: --------------- <?php $t->name='t'; $e->name='e'; $t->e=&$e; $e->t=&$t; $tt=&$t; $a->n='n'; $b->n='n'; if ($a===$b) print "Dear me A and B are the same\n"; else print "Of course A and B are different\n"; if ($tt===$t) print "Yes, of course TT and T are the same\n"; else print "No they are not\n"; ?> Expected result: ---------------- "Of course A and B are different" "Yes, of course TT and T are the same" Actual result: -------------- Dear me A and B are the same Fatal error: Nesting level too deep - recursive dependency? in /home/sam/projects/reporter/t.php on line 17 -- Edit bug report at http://bugs.php.net/?id=35053&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=35053&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=35053&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=35053&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=35053&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=35053&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=35053&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=35053&r=needscript Try newer version: http://bugs.php.net/fix.php?id=35053&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=35053&r=support Expected behavior: http://bugs.php.net/fix.php?id=35053&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=35053&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=35053&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=35053&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=35053&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=35053&r=dst IIS Stability: http://bugs.php.net/fix.php?id=35053&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=35053&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=35053&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=35053&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=35053&r=mysqlcfg
