Theory If you have not already, check the official php documentation on exceptions at http://php.net/manual/en/language.exceptions.php. Besides some php specifics, here you can find basic example how to use try catch blocks and how to work with exceptions. Example goes like this: function inverse($x) { if (!$x) { throw new Exception('Division by zero.'); } else return 1/$x; } try { echo inverse(5) . "\n"; echo inverse(0) . "\n"; } catch (Exception $e) { echo 'Caught exception: ', $e->getMessage(), "\n"; } // Continue execution echo 'Hello World'; Through this example you can see that if a process finds itself in a problematic situation, it can throw an exception. This exception can be caught, and that way we will prevent system to run into some php fatal error. This are the theoretical basics, however, the real question is how and where to use exception handling in your applications and scripts. Front Controller Front C...