note 12045 added to function.array-search.php

Note that in the above example you cannot tell the difference between "not found" and "element 0 found" which means that you have to check this beforehand with the in_array function. If you have a PHP4 which doesn't have this function, try defining it yourself with this function: function array_search ($needle, $haystack, $strict = FALSE) { for ($int = 0; $int < count($haystack); ++$int) { if ($strict) { if ($haystack[$int] === $needle) return $int; } else { if ($haystack[$int] == $needle) return $int; } } return FALSE; } http://www.php.net/manual/en/function.array-search.php