title: PHP: In Exception what's the purpose of the exception code?
body: <p>Can this be any number I choose for my personal liking (my own set of codes for my app) or is it suppose to be standard number codes?</p>
  
  <p>For reference: <a href="http://www.php.net/manual/en/exception.getcode.php" rel="nofollow">http://www.php.net/manual/en/exception.getcode.php</a></p>