note 116597 added to function.array-flip

array_flip() does not retain the data type of values, when converting them into keys. :( <?php $arr = array('one' => '1', 'two' => '2', 'three' => '3'); var_dump($arr); $arr2 = array_flip($arr); var_dump($arr2); ?> This code outputs this: array(3) { ["one"]=> string(1) "1" ["two"]=> string(1) "2" ["three"]=> string(1) "3" } array(3) { [1]=> string(3) "one" [2]=> string(3) "two" [3]=> string(5) "three" } It is valid expectation that string values "1", "2" and "3" would become string keys "1", "2" and "3". ---- Server IP: 72.52.91.14 Probable Submitter: 63.226.86.158 ---- Manual Page -- http://php.net/manual/en/function.array-flip.php Edit -- https://master.php.net/note/edit/116597 Del: integrated -- https://master.php.net/note/delete/116597/integrated Del: useless -- https://master.php.net/note/delete/116597/useless Del: bad code -- https://master.php.net/note/delete/116597/bad+code Del: spam -- https://master.php.net/note/delete/116597/spam Del: non-english -- https://master.php.net/note/delete/116597/non-english Del: in docs -- https://master.php.net/note/delete/116597/in+docs Del: other reasons-- https://master.php.net/note/delete/116597 Reject -- https://master.php.net/note/reject/116597 Search -- https://master.php.net/manage/user-notes.php