在PHP中对数组进行双重排序

$students = array(
    array('name' => 'John', 'age' => 20, 'score' => 85),
    array('name' => 'Alice', 'age' => 22, 'score' => 90),
    array('name' => 'Bob', 'age' => 21, 'score' => 80)
);

// 按照年龄升序排序，如果年龄相同则按照分数降序排序
$ages = array_column($students, 'age');
$scores = array_column($students, 'score');

array_multisort($ages, SORT_ASC, $scores, SORT_DESC, $students);

// 输出排序结果
foreach ($students as $student) {
    echo $student['name'] . ' - Age: ' . $student['age'] . ' - Score: ' . $student['score'] . "\n";
}

John - Age: 20 - Score: 85
Bob - Age: 21 - Score: 80
Alice - Age: 22 - Score: 90