Why is the uploaded file zip file is empty?
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I'm uploading files using jquery [form plugin][1] and php. I uploaded a zip file to the server, `move_uploaded_file()` returns true and then i unziped that file to another folder in he server coping existing files and folders to the directory. But i cannot see the files inside that folder. Only the folder exists. Then i downloaded the uploaded file and when i try to unzip it locally  i get `The archive is either in unknown format or damaged`. Original zip file is opening fine. I just don't get what happened to the archive . Please help me out. Help much appreciated. 


  [1]: http://malsup.com/jquery/form/#code-samples