define variable on one page, 'include' another page, pass variable to included page..

listenmirndt

Hi - not sure if this can be done,
basically I am hoping to be able to define a variable on one page,

ie.

page1.php

require 'page2.php';
$variable = 'somthing';

then page2.php

echo $variable

basically -
its for an authentication system, I need to get a user defined variable into the authentication 'require' page, so I can use it to limit a database query to tables containing the string contained in the variable.

thanks for any help

swr

If you do this:

require 'page2.php';
$variable = 'somthing';

it won't work. But if you do this:

$variable = 'somthing';
require 'page2.php';

it should work fine.

Norman_Graham

Hi Listenmirndt

Yes, of course you can do this - this is what PHP is all about. To send a variable to another page, you need to use POST or GET and then pick up the variable using:

<?php
echo $_POST["variable"];
?>

However, in your code you are using you have written require() first and then redefined the variable. The code in page2.php will run first before you reset the variable. What you want to do is $var = "something"; and then in page2.php do $var_new = $var;. BUT - you have to set $var first and then do require ("page2.php");, otherwise it won't work.

Does that answer your question?

Norm

listenmirndt

Woo!
Thats just great
I was under the impression that one had to submit a form to pick up variables on another page, thanks a ton!

-Arron

superwormy

Norman Graham is confused, teh first response has your answer in it.

In your example, you are include()ing the file before you define the var, so of course it wont show, it hasn't been defined yet.

swr

Originally posted by listenmirndt
I was under the impression that one had to submit a form to pick up variables on another page

You do, but when you use [man]require[/man] or [man]include[/man] you are pulling code from that file into the same page. The require statement behaves as if it had been replaced with the contents of the file you're including.

When the user clicks on links and stuff to go to other pages, you still need to use form variables (or cookies, or sessions) to pass the information.