note 80447 added to function.array-search

In many examples here strtolower() appears inside a loop so I guess this would be a good time to repeat something which all programmers should know: DON'T make useless calculations inside a loop since doing something O(n) times can become a lot more costly then doing it O(1) times. The following function would do a case insensitive search in a given array: public static function array_isearch($str, $array){ $str = strtolower($str); foreach ($array as $k => $v) if (strtolower($v) == $str) return $k; return false; } ---- Server IP: 212.199.163.191 Probable Submitter: 89.1.83.53 ---- Manual Page -- http://www.php.net/manual/en/function.array-search.php Edit -- https://master.php.net/note/edit/80447 Del: integrated -- https://master.php.net/note/delete/80447/integrated Del: useless -- https://master.php.net/note/delete/80447/useless Del: bad code -- https://master.php.net/note/delete/80447/bad+code Del: spam -- https://master.php.net/note/delete/80447/spam Del: non-english -- https://master.php.net/note/delete/80447/non-english Del: in docs -- https://master.php.net/note/delete/80447/in+docs Del: other reasons-- https://master.php.net/note/delete/80447 Reject -- https://master.php.net/note/reject/80447 Search -- https://master.php.net/manage/user-notes.php