inherited scope in a function (CFPARAM)

From: Indrid Cold (nobody_at_nowhere.com)
Date: 02/29/04 

Date: Sun, 29 Feb 2004 15:44:40 GMT

Is there a way to call a function so the function shares the scope of the
caller?

For example, I was playing around with making a php version of the cold
fusion tag CFPARAM

What that cold fusion tag/sorta-function does is:
1) Check if a variable exists
2) If it doesn't, creat it with a default value

I could do it inline like this:
            eval("if(empty(\$testVar)) \testVar=null;");

but I don't see how I could do it as a function, like say
            phParam("test")
... is there any way for php to see all variables in the caller's scope
without passing them in or declaring them all global?

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