title: Codeigniter $this->zip->download() not working
body: <p>I have a directory full of pdf files on the server which are uploaded by the users.</p>
  
  <p>I'm trying to create a method that will download the entire directory as zip file.</p>
  
  <p>I'm using CodeIgniter. The simple code worked fine when the directory's weight was about 100MB. But now when the directory's weight is about 600MB, it's just not working.
  (I am getting a white empty screen after about 10 seconds of loading).</p>
  
  <p>Notice that I'm new to CodeIgniter...</p>
  
  <pre><code>public function download()
  {
      $this-&gt;load-&gt;library('zip');
      $this-&gt;zip-&gt;read_dir('pdf/');
      $this-&gt;zip-&gt;download('Download.zip'); 
  
  
  }
  </code></pre>
  
  <p>Thank you!</p>