Online PHP editor | refs for q4ZtL

<?php $array = array( array("5","3","21"), array("0.5","3","may"), array("2.2","3","sport"), ); //print_r($array); function subval_sort($a,$subkey) { foreach($a as $k=>$v) { $b[$k] = strtolower($v[$subkey]); } asort($b); foreach($b as $key=>$val) { $c[] = $a[$key]; } return $c; } $result = subval_sort($array, 0); print_r($result);