Bug #62171 [Com]: "Nesting level too deep - recursive dependency?" in case of ===

Edit report at https://bugs.php.net/bug.php?id=62171&edit=1 ID: 62171 Comment by: marc-bennewitz at arcor dot de Reported by: ray dot burgemeestre at gmail dot com Summary: "Nesting level too deep - recursive dependency?" in case of === Status: Open Type: Bug Package: *Programming Data Structures Operating System: linux PHP Version: 5.4.3 Block user comment: N Private report: N New Comment: I have the same issue in a logger method stringify all values into a readable format (Zend\Log\Formatter\Base::normalize) which ever fail if the value contains a self referencing entry. It's simply not possible to check this case so in will result in an infinite loop or we get the fatal here described. AND on logging using the error handler there is a $context argument containing such a self reference :( Previous Comments: ------------------------------------------------------------------------ [2012-06-03 21:40:25] ray dot burgemeestre at gmail dot com Didn't see your reply, that sounds good Felipe.., will check it out tomorrow.. thanks. ------------------------------------------------------------------------ [2012-06-03 21:36:33] ray dot burgemeestre at gmail dot com @carloschilazo of course removing the & fixes the error. You realize this is a bugreport right? My point is that I think the === operator should still return true or false. In this case true as $a and $a[0] are the same object. My testcase was a little ambiguous, shiranai7's version is better: $a = array(); $a[0] = &$a;. ------------------------------------------------------------------------ [2012-06-03 21:31:12] felipe@php.net I've committed a change that will return immediately true the comparison between same array. So, at least your '$a = array(&$a); $a === $a;' will works. ------------------------------------------------------------------------ [2012-06-03 20:54:27] carloschilazo at gmail dot com I think the problem is your test script: <?php $a = array(&$a); <<<<<<< HERE $a === $a; ?> you are passing the value of $a by reference, and to invoke the value then it calls itself. remove the & and it works ------------------------------------------------------------------------ [2012-05-28 15:56:06] shiranai7 at hotmail dot com I can confirm this on Windows. I also tried more cases: For arrays: $a = array(); $a[0] = &$a; For objects: $a = new stdClass; $a->b = &$a; Results for comparisons of $a, $b Type PHP Operator Result --------------------------------------------- arrays 4.4.5 == fatal arrays 4.4.5 === fatal objects 4.4.5 == fatal objects 4.4.5 === fatal arrays 5.2.6 == fatal arrays 5.2.6 === fatal objects 5.2.6 == true objects 5.2.6 === true arrays 5.3.5 == fatal arrays 5.3.5 === fatal objects 5.3.5 == true objects 5.3.5 === true arrays 5.4.3 == fatal arrays 5.4.3 === fatal objects 5.4.3 == true objects 5.4.3 === true So this was fixed (either intentionally or along with general changes to object handling) in PHP 5 for objects but not for arrays. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=62171 -- Edit this bug report at https://bugs.php.net/bug.php?id=62171&edit=1