How to set multiple PHP classes intoa Debug mode?
<p>What would be the best way to set 10+ PHP classes into Debug mode easily but still keeping the classes non-dependent of other stuff?</p>

<p>If I set a Global Constant then check for it's value inside every class then every class is reliant on this constant being set.  Meaning if I try to use the class in another project it is relying on a Constant from another file.</p>
