com_invoke
    (PHP 3>= 3.0.3)
com_invoke --      Calls a COM component's method.    
Description
mixed 
com_invoke ( resource com_object, string function_name [, mixed function parameters, ...])
    com_invoke() invokes a method of the COM     component referenced by     com_object. Returns     FALSE on error, returns the     function_name's return value on success.