PHP对二维数组(多维数组)进行排序的方法

// 假设有一个二维数组 $data
$data = array(
    array('name' => 'Alice', 'age' => 28),
    array('name' => 'Bob', 'age' => 22),
    array('name' => 'Charlie', 'age' => 25),
);
// 提取出要排序的键的值，放入临时数组中
$ages = array_column($data, 'age');
// 使用 array_multisort() 对临时数组及原始数组进行排序
array_multisort($ages, SORT_ASC, $data);
// 输出排序后的数组
print_r($data);

$data = array(
    array('name' => 'Alice', 'age' => 28),
    array('name' => 'Bob', 'age' => 22),
    array('name' => 'Charlie', 'age' => 25),
);
usort($data, function($a, $b) {
    return $a['age'] - $b['age'];
});
print_r($data);

$data = array(
    array('name' => 'Alice', 'age' => 28),
    array('name' => 'Bob', 'age' => 22),
    array('name' => 'Charlie', 'age' => 25),
);
$ages = array_column($data, 'age');
$names = array_column($data, 'name');
array_multisort($ages, SORT_ASC, $names, SORT_ASC, $data);
print_r($data);

$data = array(
    array('name' => 'Alice', 'age' => 28),
    array('name' => 'Bob', 'age' => 22),
    array('name' => 'Charlie', 'age' => 25),
);
$data = array_map(function($item) {
    return array_map('strtolower', $item);
}, $data);
array_multisort(array_column($data, 'age'), SORT_ASC, $data);
print_r($data);