二维数组排序

Array
(
    [0] => Array
        (
            [user_id] => 1-000002-01-000972
            [nickname] => 游客000972
            [number] => 0
        )
	[1] => Array
	        (
	            [user_id] => 1-000101-01-100765
	            [nickname] => 用户100765
	            [number] => 4
	        )
)

//根据字段number对数组$data进行降序排列
$last_names = array_column($data,'number');
array_multisort($last_names,SORT_DESC,$data);

Array
(
    [0] => Array
        (
            [user_id] => 1-000101-01-100765
            [nickname] => 用户100765
            [number] => 4
        )

    [1] => Array
        (
            [user_id] => 1-000002-01-000972
            [nickname] => 游客000972
            [number] => 0
        )

)