Laravel php如何遍历数组的数组并添加新的键值

$array = [
    ['name' => 'John', 'age' => 25],
    ['name' => 'Jane', 'age' => 30],
    ['name' => 'Tom', 'age' => 35]
];

foreach ($array as &$item) {
    $item['gender'] = 'male';
}

// 打印结果
print_r($array);

Array
(
    [0] => Array
        (
            [name] => John
            [age] => 25
            [gender] => male
        )

    [1] => Array
        (
            [name] => Jane
            [age] => 30
            [gender] => male
        )

    [2] => Array
        (
            [name] => Tom
            [age] => 35
            [gender] => male
        )

)