Object dynamic generation: Create model classes dynamically

In this package, there are 5 files

Core classes
- Model.class.php
- Factory.class.php

Introduction to SPL
- ArrayList.class.php

Demo
- Movie.class.php
- demo.php

Note
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You are free to modify and use the codes, but make sure you give credit to the author, thanks.

Stuff to think
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Please look at demo.php  first and try to imagine how this works before you look at the core classes.
 
(1) Guess - What is inside the Movie class ?
(2) Look at the different ways of creating object.

-- Roy