note 109645 added to function.array-intersect-assoc

One of the ways to get intersection of two arrays is as follows: <?php function arrayIntersect( $primary_array, $secondary_array ) { if ( !is_array( $primary_array ) || !is_array( $secondary_array ) ) { return false; } if ( !empty( $primary_array ) ) { foreach( $primary_array as $key => $value ) { if ( !isset( $secondary_array[$key] ) ) { unset( $primary_array[$key] ); } else { if ( serialize( $secondary_array[$key] ) != serialize( $value ) ) { unset( $primary_array[$key] ); } } } return $primary_array; } else { return array(); } } ?> It would pay attention to both keys and values even if values would be arrays as well. One important note is that if value of $primary_array is yet another array, its order of key & value pairs becomes important for matching. ---- Server IP: 69.147.83.197 Probable Submitter: 95.173.38.254 ---- Manual Page -- http://www.php.net/manual/en/function.array-intersect-assoc.php Edit -- https://master.php.net/note/edit/109645 Del: integrated -- https://master.php.net/note/delete/109645/integrated Del: useless -- https://master.php.net/note/delete/109645/useless Del: bad code -- https://master.php.net/note/delete/109645/bad+code Del: spam -- https://master.php.net/note/delete/109645/spam Del: non-english -- https://master.php.net/note/delete/109645/non-english Del: in docs -- https://master.php.net/note/delete/109645/in+docs Del: other reasons-- https://master.php.net/note/delete/109645 Reject -- https://master.php.net/note/reject/109645 Search -- https://master.php.net/manage/user-notes.php