Here is the code to emulate register_globals On. 
 
[CODE]
<?php
// Emulate register_globals on
if (!ini_get('register_globals')) {
    $superglobals = array($_SERVER, $_ENV,
        $_FILES, $_COOKIE, $_POST, $_GET);
    if (isset($_SESSION)) {
        array_unshift($superglobals, $_SESSION);
    }
    foreach ($superglobals as $superglobal) {
        extract($superglobal, EXTR_SKIP);
    }
    ini_set('register_globals', true);
}
?> [/CODE]
 
 
And this code will emulate register_globals Off. 
 
[CODE]
<?php
// Emulate register_globals off
if (ini_get('register_globals')) {
    $superglobals = array($_SERVER, $_ENV,
        $_FILES, $_COOKIE, $_POST, $_GET);
    if (isset($_SESSION)) {
        array_unshift($superglobals, $_SESSION);
    }
    foreach ($superglobals as $superglobal) {
        foreach ($superglobal as $global => $value) {
            unset($GLOBALS[$global]);
        }
    }
    ini_set('register_globals', false);
}
?> 
[/CODE]