#27707 [NEW]: comparing (recursive) referenced objects fails

From: jesse at mactechs dot com Operating system: Irrelevant PHP version: 4.3.4 PHP Bug Type: Class/Object related Bug description: comparing (recursive) referenced objects fails Description: ------------ Recursive object reference comparisons fail in PHP4.x. Alternative to my "exptected result" below, I would settle for one of a couple of things. One would be a boolean comparison function that returns true if two references point to the same data, or another could be simply a boolean function that returns true if two objects are the same (with recursing to all the values). I'm aware the Zend Engine 2/PHP5 identity operator works in the fashion I'd like now, but I'd still consider this a bug for Zend Engine/PHP4. Reproduce code: --------------- // key failing element here is B::is_ref class A { var $a_ref; function set_ref (&$obj) { $this->a_ref =& $obj; } } class B { var $b_ref; function set_ref (&$obj) { $this->b_ref =& $obj; } function is_ref (&$obj) { if ($obj === $this->b_ref) return true; } } $a = new A; $b = new B; $a->set_ref ($b); $b->set_ref ($a); var_dump ($b->is_ref ($a)); Expected result: ---------------- I would expect that "if ($obj === $this->b_ref)" would return true if they (the two object references being compared) referenced the same object, and false if they didnt. Please see my description, as well. Actual result: -------------- " Fatal error: Nesting level too deep - recursive dependency? in /path-to/test.php on line 12 " -- Edit bug report at http://bugs.php.net/?id=27707&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=27707&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=27707&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=27707&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=27707&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=27707&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=27707&r=needscript Try newer version: http://bugs.php.net/fix.php?id=27707&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=27707&r=support Expected behavior: http://bugs.php.net/fix.php?id=27707&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=27707&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=27707&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=27707&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=27707&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=27707&r=dst IIS Stability: http://bugs.php.net/fix.php?id=27707&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=27707&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=27707&r=float