Use of undefined constant erorr in php

Question

I receive errors(mentioned below code) when I switched my code to another system,

Configurations:

OS : Windows 7 php server : Xampp

Please help me t

Answer 1

Your constants need to be strings. So you have to "wrap" them in quotes like this:

define('ROOT',$_SERVER['DOCUMENT_ROOT']);
       ^    ^

When in doubt, always check the Manual, in that case define()

Add:
Also defining constants in a function is, what I find, a bit "dodgy". If you insist on not moving them to another (e.g. config) file which is loaded in the very beginning then at least take them out of the class construct.