When developing apps its important to do this with our internal debug mode enabled. This will output any errors or warnings, which will make it easier on clients and for us to check if you plan on publishing your app in our Store. Additionally many aspects of the script is cached, when debug mode is enabled it disables these caches to make it easier to see the changes we make to our apps live.
Enabling Debug Mode
To enable debug mode, create a file called debug.sett.php and place it in the folder PF.Base/file/settings/
In that file add the following
<?php
define('PHPFOX_DEBUG', true);