note 46500 added to function.array-key-exists

array_key_exists() is in some circumstances MUCH slower than isset(). We had a case where a heavily recursive function used array_key_exists() to early exit. It went from 50 to 4 seconds when array_key_exists() was replaced with isset(). The funny thing was that with replacing the first array_key_exists() the benefit was 25% while the benefit with the second one was a factor of 20. The timing includes the generation of the graph with jpgraph and some other work. ---- Manual Page -- http://www.php.net/manual/en/function.array-key-exists.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+46500 Delete -- http://master.php.net/manage/user-notes.php?action=delete+46500&report=yes Reason: bad code -- http://master.php.net/manage/user-notes.php?action=delete+46500&report=yes&reason=bad+code Reason: spam -- http://master.php.net/manage/user-notes.php?action=delete+46500&report=yes&reason=spam Reason: useless example -- http://master.php.net/manage/user-notes.php?action=delete+46500&report=yes&reason=useless+example Reason: contains commercial links -- http://master.php.net/manage/user-notes.php?action=delete+46500&report=yes&reason=contains+commercial+links Reason: useless note -- http://master.php.net/manage/user-notes.php?action=delete+46500&report=yes&reason=useless+note Reject -- http://master.php.net/manage/user-notes.php?action=reject+46500&report=yes Search -- http://master.php.net/manage/user-notes.php