如何在远程文件夹 PHP 中获取最新文件？

我尝试获取文件夹的最新文件，但它不起作用。我的文件夹有一个带有 html:// 的 URL... 这可能是问题吗？这是我测试过的......谢谢

$files = scandir('http://wwww.site.com/myfolder', SCANDIR_SORT_DESCENDING);
$newest_file = $files[0];

或者

$path = "http://wwww.site.com/myfolder"; 

$latest_ctime = 0;
$latest_filename = '';    

$d = dir($path);
while (false !== ($entry = $d->read())) {
  $filepath = "{$path}/{$entry}";
  // could do also other checks than just checking whether the entry is a file
  if (is_file($filepath) && filectime($filepath) > $latest_ctime) {
    $latest_ctime = filectime($filepath);
    $latest_filename = $entry;
  }
}