/** * 二维数组按照某字段进行排序 * @param $array * @param $sort_key * @param string $sort * @return array */function array_sort($array, $sort_key, $sort = 'DESC'){    $sort = array(        'direction' => 'SORT_' . strtoupper($sort),        //排序顺序标志 SORT_DESC 降序；SORT_ASC 升序        'field'     => $sort_key,        //排序字段    );    $arrSort = array();    foreach($array AS $uniqid => $row) {        foreach($row AS $key => $value) {            $arrSort[$key][$uniqid] = $value;        }    }    if($sort['direction']) {        array_multisort($arrSort[$sort['field']], constant($sort['direction']), $array);    }    return $array;}

来源：网络