RE: [PHP] Advice on Constants - Notice: Undefined Constant

> Or should I be taking the notices as just a notice to let me know and that > my code is fine? This is a case-by-case basis. If you properly handle errors then you should never see E_NOTICE. Blindly ignoring all E_NOTICE level errors isn't ideal either although it's common especially when hacking together some code. The most common cause of a E_NOTICE error is: if ($somevar) { I'd say most typically $somevar is from a form :) Since you ask about undefined constant, it could be a simple mistake of missing some quotes or who knows... please post a small self-contained example or two that demonstrates a specific question. Well, at least I'm unsure what is being asked here as there are so many possibilities. Now while a script is in production you'll of course turn down error_reporting and display_errors to 0 and rely on your error handling scheme. Regards, Philip