src/Qiniu/QiniuAdapter.php
public function getTimestamp($path)
    {
        list(, , , $timestamp) = array_values($this->getMetadata($path));
        return !empty($timestamp) ? ['timestamp' => $timestamp ] : false;
    }
public function getTimestamp($path)
    {
        list(, , , $timestamp) = array_values($this->getMetadata($path));
        return !empty($timestamp) ? ['timestamp' => $timestamp ] : false;
    }
获得文件最后修改时间

@param string $path
@return int 时间戳
@author yangyifan <yangyifanphp@gmail.com>