note 89126 added to function.array-intersect-key

Just a simple script if you want to use one array, which contains only zeros and ones, as mask for another one (both arrays must have the same size of course). $outcome is an array that contains only those values from $source where $mask is equal to 1. $outcome = array_values(array_intersect_key( array_values($source), array_filter(array_values($mask)) )); PS: the array_values() function is necessary to ensure that both arrays have the same numbering/keys, otherwise your masking does not behave as you expect. Enjoy! ---- Server IP: 195.207.10.20 Probable Submitter: 134.58.34.54 ---- Manual Page -- http://www.php.net/manual/en/function.array-intersect-key.php Edit -- https://master.php.net/note/edit/89126 Del: integrated -- https://master.php.net/note/delete/89126/integrated Del: useless -- https://master.php.net/note/delete/89126/useless Del: bad code -- https://master.php.net/note/delete/89126/bad+code Del: spam -- https://master.php.net/note/delete/89126/spam Del: non-english -- https://master.php.net/note/delete/89126/non-english Del: in docs -- https://master.php.net/note/delete/89126/in+docs Del: other reasons-- https://master.php.net/note/delete/89126 Reject -- https://master.php.net/note/reject/89126 Search -- https://master.php.net/manage/user-notes.php