title: PHP Fatal error: Call to undefined function exif_imagetype()
body: <p>I got a photo competition that seems to work fine but when I upload a photo I get a blank screen. I checked the error log and found this:</p>
  
  <blockquote>
    <p>PHP Fatal error:  Call to undefined function exif_imagetype() in /home/fbtabvhk/public_html/pinkdrive_selfie/contest/libs/upload/save.php on line 27</p>
  </blockquote>
  
  <p>This is the code on line 27:</p>
  
  <pre><code>if (exif_imagetype($_FILES['files']['tmp_name'][0]) === FALSE)
  </code></pre>