I’ve also heard it suggested that when you are DONE with a variable, you should use unset() to get rid of it. That way there is no confusion by future readers that you are done with that var and won’t be using it later. I don’t know about that, but it sounds good.

The point here is to show examples of what code MIGHT be happening, and how to not make it happen again.

I would probably do it a different way - if it were my coding. I wouldn’t have a global functino for areTheyAdmin() - it would be part of a class, etc. But yep - good points - its useful for the newer coders to understand that global variables are NOT the way to go. -aaron

I would like to throw out this proposed solution.

That should exclude your E_NOTICE errors for variables. Also, you have above this example:

…. With that, are you stating that $isAdmin is global? Wouldn’t you rather want one of the following:
$isAdmin = areTheyAdmin();
or:
areTheyAdmin(&$isAdmin);

-Will