Question

I am using Cakephp but this is a MVC/php doubt

letting the view display the message

vs

echo 'Invalid Data'; exit;

I would like to know is there any pitfalls in the second case like memory leak etc.. Which one is better

EDIT

In case of a ajax call is exit good. and what about memory leak and other issues . Are all variables deallocated

Answer 1

You should use a custom ExceptionHandler (set_error_handler / set_exception_handler) and throw an Exception if you encounter any errors (CakePHP should already provide an ExceptionHandler). Make some space in your view and if the ExceptionHandler/ErrorHandler has a message, show it there to let the user know.

Your second code will just produce a blank page containing the little text. Every user will appreciate if you show the message inside your usual page layout instead of producing a blank page (which looks broken to most people).