note 102701 added to function.usort

Probably a bug or an undocumented feature: usort() sorts your list even if you don't want to. Detail: If you call usort($your_list, "your_call_back_function"), where inside the your_call_back_function() you return 0 immediately, then you would expect $your_list to be unchanged. But in fact it is changed. Code: <?php function your_call_back_function($left, $right){ return 0; } $your_list = array(1, 3, 2); usort($your_list, "your_call_back_function"); print_r($your_list); ?> ---- Server IP: 69.147.83.197 Probable Submitter: 80.113.160.213 ---- Manual Page -- http://www.php.net/manual/en/function.usort.php Edit -- https://master.php.net/note/edit/102701 Del: integrated -- https://master.php.net/note/delete/102701/integrated Del: useless -- https://master.php.net/note/delete/102701/useless Del: bad code -- https://master.php.net/note/delete/102701/bad+code Del: spam -- https://master.php.net/note/delete/102701/spam Del: non-english -- https://master.php.net/note/delete/102701/non-english Del: in docs -- https://master.php.net/note/delete/102701/in+docs Del: other reasons-- https://master.php.net/note/delete/102701 Reject -- https://master.php.net/note/reject/102701 Search -- https://master.php.net/manage/user-notes.php