目录的递归复制

On my old VPS I was using the following code to copy the files and directories within a directory to a new directory that was created after the user submitted their form.

function copyr($source, $dest)
{
   // Simple copy for a file
   if (is_file($source)) {
      return copy($source, $dest);
   }

   // Make destination directory
   if (!is_dir($dest)) {
      mkdir($dest);
      $company = ($_POST['company']);
   }

   // Loop through the folder
   $dir = dir($source);
   while (false !== $entry = $dir->read()) {
      // Skip pointers
      if ($entry == '.' || $entry == '..') {
         continue;
      }

      // Deep copy directories
      if ($dest !== "$source/$entry") {
         copyr("$source/$entry", "$dest/$entry");
      }
   }

   // Clean up
   $dir->close();
   return true;
}

copyr('Template/MemberPages', "Members/$company")

但是现在在我的新 VPS 上，它只会创建主目录，而不会将任何文件复制到其中.我不明白这两个 VPS 之间会发生什么变化?

$source = "dir/dir/dir";
$dest= "dest/dir";

mkdir($dest, 0755);
foreach (
 $iterator = new RecursiveIteratorIterator(
  new RecursiveDirectoryIterator($source, RecursiveDirectoryIterator::SKIP_DOTS),
  RecursiveIteratorIterator::SELF_FIRST) as $item
) {
  if ($item->isDir()) {
    mkdir($dest . DIRECTORY_SEPARATOR . $iterator->getSubPathname());
  } else {
    copy($item, $dest . DIRECTORY_SEPARATOR . $iterator->getSubPathname());
  }
}