对大型多维数组进行排序

Question

我有一个非常大的数组包含以下数据:

Array
(
    [2] => Array
        (
            [Berlin] => Array
                (
                    [1] => Array
                        (
                            [0] => stdClass Object
                                (
                                    [name] => Joe
                                    [car_name] => Audi
                                    [car_color] => Black
                                    [sid] => 130 
                                )
                            [1] => stdClass Object
                                (
                                    [name] => Mark
                                    [car_name] => BMW
                                    [car_color] => Red
                                    [sid] => 135
                                )
                        )
                    [0] => Array
                        (
                            [0] => stdClass Object
                                (
                                    [name] => Lucas
                                    [car_name] => Audi
                                    [car_color] => Yellow
                                    [sid] => 168
                                )
                            [1] => stdClass Object
                                (
                                    [name] => Joe
                                    [car_name] => Volkswagen
                                    [car_color] => Black
                                    [sid] => 170 
                                )
                            [2] => stdClass Object
                                (
                                    [name] => Thomas
                                    [car_name] => Ford
                                    [car_color] => Gray
                                    [sid] => 119
                                )
                        )
                )
            [Moscow] => Array
                (
                    [1] => Array
                        (
                            [0] => stdClass Object
                                (
                                    [name] => Matt
                                    [car_name] => Mustang
                                    [car_color] => Black
                                    [sid] => 230 
                                )
                            [1] => stdClass Object
                                (
                                    [name] => Suze
                                    [car_name] => Lada
                                    [car_color] => Red
                                    [sid] => 245
                                )
                        )
                    [0] => Array
                        (
                            [0] => stdClass Object
                                (
                                    [name] => Lucas
                                    [car_name] => Unknown
                                    [car_color] => Brown
                                    [sid] => 374
                                )
                            [1] => stdClass Object
                                (
                                    [name] => Mathew
                                    [car_name] => Volkswagen
                                    [car_color] => Blue
                                    [sid] => 589 
                                )
                            [2] => stdClass Object
                                (
                                    [name] => Thomas
                                    [car_name] => Ford
                                    [car_color] => Light Blue
                                    [sid] => 741
                                )
                        )
                )
        )
)

现在我想这样排序(请阅读以下//内容):

Array
(
    [2] => Array //from min to max - eg. from 0 to 50
        (
            [Berlin] => Array //alphabetically from A to Z
                (
                    [1] => Array //from min to max eg. from 0 to 1
                        (
                        )
                 )
         )
)

我怎样才能在PHP中实现这一点？我希望我足够清楚,随时可以在评论中询问其他信息.

Answer 1

会是这样的:

// ksort sorts the keys low to high

ksort($array[2]);

// uksort w/ natsort is a full alphanumeric sorting A-Z0-9
uksort($array[2]['Berlin'], 'natsort');

ksort($array[2]['Berlin'][1]);

有关数组和数组函数的文档:

http://us3.php.net/manual/en/book.array.php

功能实例

此示例特定于您的示例; 但是,如果您的数组结构非常动态,则可以创建递归样式函数.

$BigArray = array();

//Sorting the initial array index
ksort($BigArray);

foreach($BigArray as $a)
{
    // Sorting Berlin / Moscow here..
    uksort($a, 'natsort');
    foreach($a as $b)
    {
        // Sorting the index inside the cities
        ksort($b);
    }
}