在复杂数组中搜索和修改php中的值

$complexArray = [
    'key1' => 'value1',
    'key2' => [
        'subkey1' => 'subvalue1',
        'subkey2' => 'subvalue2',
    ],
    'key3' => [
        'subkey3' => [
            'subsubkey1' => 'subsubvalue1',
            'subsubkey2' => 'subsubvalue2',
        ],
    ],
];

function searchValue($array, $searchValue) {
    foreach ($array as $key => $value) {
        if ($value === $searchValue) {
            return $key; // 返回键
        }
        if (is_array($value)) {
            $result = searchValue($value, $searchValue);
            if ($result !== false) {
                return $key . '.' . $result; // 返回键路径
            }
        }
    }
    return false; // 未找到匹配值
}

function modifyValue(&$array, $searchKey, $newValue) {
    foreach ($array as $key => &$value) {
        if ($key === $searchKey) {
            $value = $newValue; // 修改值
            return true;
        }
        if (is_array($value)) {
            $result = modifyValue($value, $searchKey, $newValue);
            if ($result) {
                return true;
            }
        }
    }
    return false; // 未找到匹配键
}