--- Ryan A <[EMAIL PROTECTED]> wrote:
> I thought i knew the useage of the "global" keyword in a function but
> after reading a pals program i am really confused, i tried
> http://php.net/global but that does not give me any results...searched
> the list and found some reference to global and the "scope" of the
> function but still confused.
>
> Anybody have a good link or can give me a place to read up on the
> defination with an example?
There are two scopes you need to understand in order to grok this:
1. Global
2. Function Local
Most "normal" variables are global. There are, of course, the
"superglobals" that PHP provides, but a $foo that you create is global.
The exception is when you create $foo within a function. In this case, its
scope is local to that function only. If you want it to be global instead,
you can declare it as such.
As a result of this, there are two ways that a function can manipulate
global data:
1. The variable is passed in by reference.
2. The variable is declared to be global.
Hope that helps.
Chris
=====
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http://shiflett.org/
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