Doc #54954 [Fbk->Csd]: preg_match() returns zero if an error occurred

Edit report at https://bugs.php.net/bug.php?id=54954&edit=1 ID: 54954 User updated by: benoit dot chenu at gmail dot com Reported by: benoit dot chenu at gmail dot com Summary: preg_match() returns zero if an error occurred -Status: Feedback +Status: Closed Type: Documentation Problem -Package: Documentation problem +Package: PCRE related -PHP Version: 5.3.6 +PHP Version: 5.3.3 Block user comment: N Private report: N New Comment: Hi, I was testing on 5.3.3 (and not 5.3.6). I made a mistake when reporting. I change the version to 5.3.3 in bug's description. I've just tested on latest version (5.3.6) and the problem is resolved. So this is not a documentation problem but a bug. I also change the package and bug type in description. I finally found the bug report which was resolve the problem : https://bugs.php.net/bug.php?id=52732 The bug fix was published with PHP 5.3.4 Just for information, the tests I was doing : <?php $buf = str_repeat('a', 100000).'b'; var_dump(preg_match('/^(.*?)b$/s', $buf)); var_dump(preg_last_error()); Result on PHP 5.3.3 : int(0) int(2) Result on PHP 5.3.6 : bool(false) int(2) I close the bug. Thanks for your attention. Previous Comments: ------------------------------------------------------------------------ [2011-06-14 16:36:27] aharvey@php.net What version of PHP are you getting integer 0 back from preg_match() when the backtrack limit is hit? Everything I have to hand is returning boolean false, which is what I'd expect. ------------------------------------------------------------------------ [2011-05-30 19:34:29] benoit dot chenu at gmail dot com Description: ------------ --- From manual page: http://www.php.net/manual/en/function.preg-match.php#Return Values --- A bug was already opened (#51741) about this but not treated. If an error occurs (like reaching pcre.backtrack_limit), preg_match doesn't return FALSE as described in the documentation but returns 0. It should be nice to update the documentation. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=54954&edit=1