note 8612 added to function_exists

This is all well and good but how does one check for an existance of a function that is located within a class? function_exists("classname->functionname"); doesn't work, neither does the functionname on it's own (obviously) I am assuming that the function names get stored in a symbol table somewhere and when it lies within a class it get prefixed with the class name and probably some other stuff ... like classname_blahblahblah_functionname. Anyone know the format of this, cos I assume function_exists just does a lookup in the function symbol table. So if we know the format then we can call function_exists with it, yeah. Alot of assumptions I am afraid, and no answers, I would really appreciate if someone could sort this one out form me. http://www.php.net/manual/function.function-exists.php