在php中对多维数组进行排序

$multiArray = array(
    array('name' => 'John', 'age' => 25, 'city' => 'New York'),
    array('name' => 'Jane', 'age' => 30, 'city' => 'Los Angeles'),
    array('name' => 'Bob', 'age' => 20, 'city' => 'Chicago')
);

// 按照age列进行升序排序
array_multisort(array_column($multiArray, 'age'), SORT_ASC, $multiArray);

// 输出排序后的数组
print_r($multiArray);

Array
(
    [0] => Array
        (
            [name] => Bob
            [age] => 20
            [city] => Chicago
        )

    [1] => Array
        (
            [name] => John
            [age] => 25
            [city] => New York
        )

    [2] => Array
        (
            [name] => Jane
            [age] => 30
            [city] => Los Angeles
        )

)

$multiArray = array(
    array('name' => 'John', 'age' => 25, 'city' => 'New York'),
    array('name' => 'Jane', 'age' => 30, 'city' => 'Los Angeles'),
    array('name' => 'Bob', 'age' => 20, 'city' => 'Chicago')
);

// 自定义排序函数
function customSort($a, $b) {
    return $a['age'] - $b['age'];
}

// 使用自定义排序函数对多维数组进行排序
usort($multiArray, 'customSort');

// 输出排序后的数组
print_r($multiArray);

Array
(
    [0] => Array
        (
            [name] => Bob
            [age] => 20
            [city] => Chicago
        )

    [1] => Array
        (
            [name] => John
            [age] => 25
            [city] => New York
        )

    [2] => Array
        (
            [name] => Jane
            [age] => 30
            [city] => Los Angeles
        )

)