At first such an notion may seem strange, even impossible; after all, who among us isn't familiar with that barrier dividing server side and client side scripts that prohibit the two from interacting? Well, it turns out superficial exchange is allowed.
The above example already does that.[EDIT by danbrown AT php DOT net: The function provided by this author will give you all defined variables at runtime. It was originally written by (john DOT t DOT gold AT gmail DOT com), but contained some errors that were corrected in subsequent posts by .