help with echoing out the url

[moroccanplaya]

hi this should work but i do not know why its not working

$url = $_GET['url'];
echo $url;

[Rabbit]

What do you mean by not working? Are there error messages? If so, what are they? Is it not printing out the value that was passed? If so, what value was passed and what did it print instead?

[moroccanplaya]

<?php

$url = $_GET["url"];
echo $url;


require 'controllers/' .$url;

$controller = new $url;



?>

<?php
class Index {
    
    function __construct() {
        
        echo 'we are in index'; 
    }
}

?>

error:

( ! ) Notice: Undefined index: url in C:\wamp\www\mvc \index.php on line 3
Call Stack
# Time Memory Function Location
1 0.0008 364448 {main}( ) ..\index.php:0

( ! ) Warning: require(C:\wamp \www\mvc\contro llers) [function.requir e]: failed to open stream: Permission denied in C:\wamp\www\mvc \index.php on line 7
Call Stack
# Time Memory Function Location
1 0.0008 364448 {main}( ) ..\index.php:0

( ! ) Fatal error: require() [function.requir e]: Failed opening required 'controllers/' (include_path=' .;C:\php\pear') in C:\wamp\www\mvc \index.php on line 7
Call Stack
# Time Memory Function Location
1 0.0008 364448 {main}( ) ..\index.php:0

[Rabbit]

Looks like the errors stem from line 3 and cascade downwards. It's saying that the url variable isn't being passed in GET. Look at the form that is submitted and make sure there's a form control with the name url.