Baffling, sporadic error message - validation issue?

[eluser]xzela[/eluser]
Hi,

the function empty() can be weird sometimes. a string set to "0" is considered empty.

Check out these type comparisons:
http://www.php.net/manual/en/types.comparisons.php

You might be able to get away with this:

Code:

if (!$this->ClientID) { //flip-a-bit,
            echo json_encode(array('error'=>'ClientID is required'));
            return; //exit
        }

This will either solve the issue or completely break your application.