title: Php issue uploading two pdfs
body: <p>I'm having an issue with a form uploading two files. It works when I upload a PDF file using one file upload field, it also works if I upload two txt files using two fileupload fields. But if I try to upload two pdf files using two fileupload fields at one time I get a 500 error. The error within the error_log is permissions denied. I don't get these errors on two text files or one pdf file only when two pdf files.</p>
  
  <p>Here's the post data.</p>
  
  <pre><code>------WebKitFormBoundarymCHfTtKQAJOYkMDB
  Content-Disposition: form-data; name="contact_attachment"; filename="pdf-sample.pdf"
  Content-Type: application/pdf
  
  
  ------WebKitFormBoundarymCHfTtKQAJOYkMDB
  Content-Disposition: form-data; name="contact_attachment2"; filename="pdf-sample2.pdf"
  Content-Type: application/pdf
  
  
  ------WebKitFormBoundarymCHfTtKQAJOYkMDB--
  </code></pre>
  
  <p>I have a working version of this locally and the codebase is the same. Could any php/server setting be causing this?</p>