Description:
------------
I created a wrapper class to wrap the creation and use of your 
extension. In the constructor, I'm creating the array of 
allowed tags and needed to use a callback.

If I move the array of tags outside the constructor and use it 
from global (not my final solution...ew.) the callbacks work 
fine. This doesn't appear to be an issue anywhere else.

I will poke around to see if I can remediate and rebuild from 
src.

(The only reason I'm using Windows is simply that's what we're 
issued...our production boxes are linux and I will test those 
later today).

Reproduce code:
---------------
http://troymccabe.com/bbcode.phps

Expected result:
----------------
string(4) "test" string(0) ""

Actual result:
--------------
Warning: bbcode_parse() [function.bbcode-parse]: function `!' 
is not callable in C:\www\...snip...\BBCode.class.php on line 
117

Warning: Invalid callback Array, array must have exactly two 
members in C:\www\...snip...\BBCode.class.php on line 117

Warning: bbcode_parse() [function.bbcode-parse]: function 
`Array' is not callable in C:\www\...snip...\BBCode.class.php 
on line 117

<ul>test</li>