note 105012 added to function.array-filter

You can access the current key of array by passing a reference to array into callback function and call key() and next() method in the callback function: <?php $data = array('first' => 1, 'second' => 2, 'third' => 3); $data = array_filter($data, function ($item) use (&$data) { echo "Filtering key ", key($data), '<br>', PHP_EOL; next($data); return false; }); ?> However be careful with array internal pointer or use reset() method before calling array_filter(). ---- Server IP: 69.147.83.197 Probable Submitter: 213.152.137.45 ---- Manual Page -- http://www.php.net/manual/en/function.array-filter.php Edit -- https://master.php.net/note/edit/105012 Del: integrated -- https://master.php.net/note/delete/105012/integrated Del: useless -- https://master.php.net/note/delete/105012/useless Del: bad code -- https://master.php.net/note/delete/105012/bad+code Del: spam -- https://master.php.net/note/delete/105012/spam Del: non-english -- https://master.php.net/note/delete/105012/non-english Del: in docs -- https://master.php.net/note/delete/105012/in+docs Del: other reasons-- https://master.php.net/note/delete/105012 Reject -- https://master.php.net/note/reject/105012 Search -- https://master.php.net/manage/user-notes.php