PHP二维数组指定字段进行排序

/**
 * 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