Get reference count on a variable.

Hi All, I think I'm looking for something that doesn't exist, but just in case thought I'd check the list. Does anyone know if a PHP function exists to get the number of references on a given variable's data? I was hoping to create a way for a factory to automatically recycle resources without the need for the developer to call some kind of free() method. If I could get the internal reference count then I'd be able to determine if it is free by virtue of only 1 reference (the factory). This is for PHP4 btw, the solution is trivial in PHP5 using destructors. Thanks in advance. Rob. -- .------------------------------------------------------------. | InterJinn Application Framework - http://www.interjinn.com | :------------------------------------------------------------: | An application and templating framework for PHP. Boasting | | a powerful, scalable system for accessing system services | | such as forms, properties, sessions, and caches. InterJinn | | also provides an extremely flexible architecture for | | creating re-usable components quickly and easily. | `------------------------------------------------------------'