note 82388 added to function.list

Here's yet another way to make a list()-like construct for associative arrays. This one has the advantage that it doesn't depend on the order of the keys, it only extracts the keys that you specify, and only extracts them into the current scope instead of the global scope (which you can still do, but at least here you have the option). <?php $arr = array("foo" => 1, "bar" => 2, "baz" => 3); $keys = array("baz"); // $foo = 10; $bar = 20; $baz = 30; extract(array_intersect_key($arr, $keys)); var_dump($foo); var_dump($bar); var_dump($baz); ?> Should print NULL int(20) int(3) If your version of PHP doesn't have array_intersect_key() yet (below 5.1 I think), it's easy to write a limited feature replacement for this purpose. <?php function my_array_intersect_key ($assoc, $keys) { $intersection = array(); foreach ($assoc as $key => $val) if (in_array($key, $keys)) $intersection[$key] = $val; return $intersection; } ?> ---- Server IP: 216.92.131.65 Probable Submitter: 24.20.36.167 ---- Manual Page -- http://www.php.net/manual/en/function.list.php Edit -- https://master.php.net/note/edit/82388 Del: integrated -- https://master.php.net/note/delete/82388/integrated Del: useless -- https://master.php.net/note/delete/82388/useless Del: bad code -- https://master.php.net/note/delete/82388/bad+code Del: spam -- https://master.php.net/note/delete/82388/spam Del: non-english -- https://master.php.net/note/delete/82388/non-english Del: in docs -- https://master.php.net/note/delete/82388/in+docs Del: other reasons-- https://master.php.net/note/delete/82388 Reject -- https://master.php.net/note/reject/82388 Search -- https://master.php.net/manage/user-notes.php