Online PHP editor | refs for mnIWP

<?php $arr = array(); $arr['i1']['val1'] = 99; $arr['i1']['val2'] = 100; $arr['i2']['val1'] = 89; $arr['i2']['val2'] = 101; function cmp($a, $b) { global $arr; if ($arr[$a]['val2'] > $arr[$b]['val2']) { return 1; } if ($arr[$q]['val2'] < $arr[$b]['val2']) { return -1; } return 0; } if (uksort($arr, 'cmp')) { echo "success"; } else { echo "failure"; } print_r($arr);