PHPで多次元配列をソートする

$data = array(
    [0] => array(
        "foo" => 10,
        "bar" => 5,
        "hoge" => 7
    ),
    [1] => array(
        "foo" => 8,
        "bar" => 6,
        "hoge" => 1
    ),
    [2] => array(
        "foo" => 10,
        "bar" => 5,
        "hoge" => 7
    )
);

foo列でソートする場合

foreach($data as $key => $row){
    $foo[$key] = $row["foo"];
}

array_multisort($foo,SORT_DESC,$data);

foo,bar,hogeでソートしたい場合

foreach($data as $key => $row){
    $foo[$key] = $row["foo"];
    $bar[$key] = $row["bar"];
    $hoge[$key] = $row["hoge"];
}

array_multisort($foo,SORT_DESC,$bar,SORT_DESC,$hoge,SORT_DESC,$data);

素晴らしすぎる！