排序多维数组

Question

我正在用PHP进行多维数组排序。我想根据lineNumber对数组进行排序，从而对公交路线进行排序（即Tasen，Ekeberg Hageby和Jernbanetorget。我的数组如下：

Array (
    [Ryenbergveien] => Array
        (
            [Tasen] => Array
                (
                    [lineNumber] => 34
                    [expectedMinutes] => Array
                        (
                            [0] => 0
                            [1] => 15
                            [2] => 30
                        )

                )

            [Ekeberg hageby] => Array
                (
                    [lineNumber] => 84
                    [expectedMinutes] => Array
                        (
                            [0] => 6
                            [1] => 20
                            [2] => 35
                        )
                )
            [Jernbanetorget] => Array
                (
                    [lineNumber] => 74
                    [expectedMinutes] => Array
                        (
                            [0] => 7
                            [1] => 22
                            [2] => 37
                            [3] => 52
                        )
                )
        )

我希望相对于lineNumber以升序在总线路线级别（Tasen，Jernbanetorget和Ekeberg hageby）对数组进行排序，例如：

   Array (
    [Ryenbergveien] => Array
        (
            [Tasen] => Array
                (
                    [lineNumber] => 34
                    [expectedMinutes] => Array
                        (
                            [0] => 0
                            [1] => 15
                            [2] => 30
                        )

                )

             [Jernbanetorget] => Array
                (
                    [lineNumber] => 74
                    [expectedMinutes] => Array
                        (
                            [0] => 7
                            [1] => 22
                            [2] => 37
                            [3] => 52
                        )
                )

            [Ekeberg hageby] => Array
                (
                    [lineNumber] => 84
                    [expectedMinutes] => Array
                        (
                            [0] => 6
                            [1] => 20
                            [2] => 35
                        )
                )

        )

谢谢！

编辑：已解决，感谢：https://stackoverflow.com/a/48529086/7009817 解决方案：

function multisortByKeyValue( $k, $arr ) {
    $ids   = array();
    $index = 1;

    foreach ( $arr as $key => $row ) {
        $ids[ $key ] = intval( $row[ $k ] ) . '-' . $index . '-' . $key;
        $index ++;
    }

    natsort( $ids );

    $arr = array_merge( $ids, $arr );

    return $arr;
}

 foreach ( $bussline as $a1 => $verdi ) { // loop gjennom hver holdeplass

  foreach ( $bussline[$a1] as $a2 => $verdi ) { // loop gjennom hver bussrute

    $bussline[$a1] = multisortByKeyValue( 'linje', $bussline[$a1] );


   }

 }