#50817 [Opn->Csd]: Dangerously vague documentation for spl_object_hash()

ID: 50817 Updated by: degeberg@php.net Reported By: michaelzajonz at web dot de -Status: Open +Status: Closed Bug Type: Documentation problem Operating System: -- PHP Version: Irrelevant New Comment: This bug has been fixed in the documentation's XML sources. Since the online and downloadable versions of the documentation need some time to get updated, we would like to ask you to be a bit patient. Thank you for the report, and for helping us make our documentation better. Previous Comments: ------------------------------------------------------------------------ [2010-01-21 22:58:09] svn@php.net Automatic comment from SVN on behalf of degeberg Revision: http://svn.php.net/viewvc/?view=revision&revision=293824 Log: Fixed bug #50817 (Dangerously vague documentation for spl_object_hash()) ------------------------------------------------------------------------ [2010-01-21 22:56:34] michaelzajonz at web dot de (Of course the reproduce code results in different output. Excpected/actual result apply to the documentation problem) ------------------------------------------------------------------------ [2010-01-21 22:51:54] michaelzajonz at web dot de Description: ------------ This is NOT a bug report regarding the implementation of spl_object_hash() but rather its documentation! It says there (http://de.php.net/manual/en/function.spl-object-hash.php) for the return value of function spl_object_hash(): "A string that is unique for each object and is always the same for the same object." I used this function for a while now, also in production environment. Recently I coincidentally discovered a user-contributed comment saying that the IDs of destroyed objects will be reused. The Documentation itself should say so, I think. While debugging some other issue in my code I actually observed a case where this would have led to a serious problem (for now, I just appended the current microtime, since the class I'm dealing with is kinda huge and takes a while to instantiate. Still sucks of course.). Reproduce code: --------------- var_dump(spl_object_hash(new stdClass()), spl_object_hash(new stdClass())); Expected result: ---------------- "A string that is unique for each object and is always the same for the same object." Actual result: -------------- "A string that is unique for each currently existing object and is always the same for the same object." or something like that ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=50817&edit=1