PHP Unzip function creating hidden system files

Question

I have the below code (part of a function) that i run on my wordpress site. It works fine, but it also creates a system file (starting with a '.') for each file. This wouldn't normally be a problem but my HTML5 audio player picks these files up, and obviously can't play them so it looks like the player is broken.

Is there a way to stop the creation of these files from the Zip side of it? Or am i going to have to stop it from the player side?

I would rather stop them being created at all, as they take up space.

The code is:

   // Unzip files to temp unzip folder, ignoring anything that is not a .mp3 extension
   $zip = new ZipArchive();
   $filename = $zip_file_path;

   if ($zip->open($filename)!==TRUE) {
      exit("cannot open <$filename>\n");
   }

   for ($i=0; $i<$zip->numFiles;$i++) {
      $info = $zip->statIndex($i);
      $file = pathinfo($info['name']);
      if(strtolower($file['extension']) == "mp3") {
           file_put_contents($temp_unzip_path.'/'.basename($info['name']), $zip->getFromIndex($i));
      } else {
      $zip->deleteIndex($i);
      }
   }
   $zip->close();

Answer 1

为什么不通过检查文件名的第一个字符不是句号来增加mp3的条件呢？

      if(strtolower($file['extension']) == "mp3" && $info['name'][0] != '.') {