//二维数组排序, $arr是数据,$keys是排序的健值,$order是排序规则,1是升序,0是降序function array_sort($arr, $keys, $order=0) {if (!is_array($arr)) {return false;}$keysvalue = array();foreach($arr as $key => $val) {$keysvalue[$key] = $val[$keys];}if($order == 0){asort($keysvalue);}else {arsort($keysvalue);}reset($keysvalue);foreach($keysvalue as $key => $vals) {$keysort[$key] = $key;}$new_array = array();foreach($keysort as $key => $val) {$new_array[$key] = $arr[$val];}return $new_array;}
PHP面试题:写一个二维数组排序算法函数 能够具有通用性 可以调用php内置函数(array_multisort())