src/Oss/OssAdapter.php
public function getTimestamp($path)
    {
        $file_info = $this->getMetadata($path);
        return $file_info != false && !empty($file_info['last-modified']) ? ['timestamp' => strtotime($file_info['last-modified']) ] : false;
    }
public function getTimestamp($path)
    {
        $file_info = $this->getMetadata($path);
        return $file_info != false && !empty($file_info['last-modified']) ? ['timestamp' => strtotime($file_info['last-modified']) ] : false;
    }
获得文件最后修改时间

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