只返回php数组中与我的自定义字段月份(array_filter)相等的项

<?php
// 定义自定义字段月份
$customMonth = '2022-01';

// 定义数组
$array = [
    ['id' => 1, 'date' => '2022-01-01'],
    ['id' => 2, 'date' => '2022-02-01'],
    ['id' => 3, 'date' => '2022-01-15'],
    ['id' => 4, 'date' => '2022-03-01'],
];

// 使用array_filter函数过滤数组
$result = array_filter($array, function($item) use ($customMonth) {
    return substr($item['date'], 0, 7) == $customMonth;
});

// 输出结果
print_r($result);
?>