note 89432 modified in function.array-filter by danbrown

I wanted a function to keep the values that were filtered out and return them separately. Basically, split the array by some callback. I wrote this for the job: <?php function array_split($input, &$trues, &$falses, $compare) { while (($item = array_pop($input)) != NULL) { if ($compare($item)) $trues[] = $item; else $falses[] = $item; } } ?> very simple, something I would think would be standard, and array_filter would amount to discarding the falses. --was-- I wanted a function to keep the values that were filtered out and return them separately. Basically, split the array by some callback. I wrote this for the job: function array_split($input, &$trues, &$falses, $compare) { while (($item = array_pop($input)) != NULL) { if ($compare($item)) $trues[] = $item; else $falses[] = $item; } } very simple, something I would think would be standard, and array_filter would amount to discarding the falses. http://php.net/manual/en/function.array-filter.php