I'm a somewhat newcomer to PHP, so ...

I am passing a variable $theState into a function, and this line:

                 $zz = $statesRegions[$theState]['Region'];

generates an error: Undefined index:  Pennsylvania in E:\moodle\moodle\local\sssevents\classes\observer.php on line 167

I, though I do something like this:

                 $theState = 'Pennsylvania';

                 $zz = $statesRegions[$theState]['Region'];

I get the answer that I want.

This has to do with passing a variable into a function, and then using it to index an array.  Can anyone shed some light on this?

Thanks.