php statement is_set or array_key_exist ??

Hi guys,... How u all doinnnn...
Needless to say "...I Love You All ! " What A Wonderful Group ... !

I still have problems on Favorite issues,...
Once the User favorite say some group, or video,...
the button to "Add to Favorites" MUST BE REPLACED WITH "Remove
Favorites"
I want to know how to make that statement in php... I don't know
how... lol I'm still a newbie,... but have some experiance from long
time ago. And what I'm doing is creating Social Network site, and with
little or no knowlllege at all do so far this much. Can you PLEASE
help me with my project??

Or anyone... ??

Here is my question again:

<?php if( WHAT THE HELL IS IN HERE ??? oopps... ($group['Group']
['id'])): ?>

Thanks
Chris

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