PHP function to sort array

private function sort_array($array, $on, $order=SORT_ASC) { $new_array = array(); $sortable_array = array(); if (count($array) > 0) { foreach ($array as $k => $v) { if (is_array($v)) { foreach ($v as $k2 => $v2) { if ($k2 == $on) { $sortable_array[$k] = $v2; } } } else { $sortable_array[$k] = $v; } } switch ($order) { case SORT_ASC: asort($sortable_array); break; case SORT_DESC: arsort($sortable_array); break; } foreach ($sortable_array as $k => $v) { $new_array[$k] = $array[$k]; } } return $new_array; } }