doucan1979 2017-11-21 15:20
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使用uksort在PHP中对Month-Year多维数组进行排序

I want to sort the following array:

Array(
    [05/2017] => Array (
        [city] => 'ABC'
        [memebers] => '50'
    )
    [03/2017] => Array (
        [city] => 'ABC'
        [members] => '25'
    )
    [10/2016] => Array (
        [city] => 'ABC'
        [members] => '20'
    )
    [11/2017] => Array (
        [city] => 'ABC'
        [members] => '65'
    )
)

The expected result:

Array(
    [10/2016] => Array (
        [city] => 'ABC'
        [members] => '20'
    )
    [03/2017] => Array (
        [city] => 'ABC'
        [members] => '25'
    )
    [05/2017] => Array (
        [city] => 'ABC'
        [members] => '50'
    )
    [11/2017] => Array (
        [city] => 'ABC'
        [members] => '65'
    )
)

I'm using uksort to sort it, but I guess uksort does not work with multidimensional array:

uksort($data, function($a1, $a2) {
    $time1 = strtotime($a1);
    $time2 = strtotime($a2);

    return $time1 - $time2;
});

Please suggest how will it work with uksort or any other possibility?

  • 写回答

1条回答 默认 最新

  • douluozhan4370 2017-11-21 15:31
    关注

    This should works :

    $data = 
        array(
            '05/2017' => array (
                'city' => 'ABC',
                'memebers' => '50'
            ),
            '03/2017' => array (
                'city' => 'ABC',
                'members' => '25'
            ),
            '10/2016' => array (
                'city' => 'ABC',
                'members' => '20'
            ),
            '11/2017' => array (
                'city' => 'ABC',
                'members' => '65'
            ),
        );
    
    uksort($data, function($a1, $a2) {
        return DateTime::createFromFormat('m/Y|', $a1) <=> DateTime::createFromFormat('m/Y|', $a2);
    });
    
    var_dump($data);
    

    You need to use DateTime since your dates are not well formated, then just compare the timestamps. As pointed by Mark, use "m" for months, and you can use "<=>" operator (since PHP 7)

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

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