vBulletin Arrays

[James Birkett]

It seems (from my view) that vBulletin uses arrays in order to run things. Such as a $post array holding values like $post['username'], $post['userid']. The same is true for $user.

I was wondering, how would I go about showing these arrays on a separate page so I could see what $post, $user, $show etc. arrays hold what values. I want to learn more about vBulletin's code.