note 122377 deleted from function.array-search by crell

Note Submitter: Xriuk ---- Be careful when search for indexes from array_keys() if you have a mixed associative array it will return both strings and integers resulting in comparison errors <?php // This syntax is allowed by PHP $arr = array( "nice", "car" => "fast", "none" ); // Print the keys var_dump(array_keys($arr)); /* The above prints this, as you can see we have mixed keys array(3) { [0]=> int(0) [1]=> string(3) "car" [2]=> int(1) } */ // Search for the index "car" var_dump(array_search("car", array_keys($arr))); // Prints "int(0)" which is WRONG ?> This happens because PHP, when comparing strings and integers, casts strings TO integers and this results in most of the cases in string becoming 0, so that's why when array_search() compares the first index (0) with the key "car" it gets true because apparently ("car" == 0) IS TRUE. Setting array_search() to strict mode won't solve the problem because then array_search("0", array_keys($arr)) would return false even if an element with index 0 exists. So my solution just converts all indexes from array_keys() to strings and then compares them correctly: <?php var_dump(array_search("car", array_map("strval", array_keys($arr)))); // Prints "int(1)" which is CORRECT ?>