How to add a custom value to current URL - php

Question

i use a CMS (elgg : http://www.elgg.org ) working with view, equivalent to theme/template. To change the theme i have to put inside URL the term ?view=mytheme, like :
http://www.mydomain.com/index.php?view=mytheme
If i don't add ?view=mytheme, elgg choose the view by default
So, i need help, for specific users, i want to redirect us to a custom view, and can't see the default view.
I make this in my header :
<?php
if ((string) $_SESSION['user']->type === '2') {
// ???
} else {
echo 'do nothing';
}
I don't know how to take the current url, and simple add ?view=mytheme at the end ?
When a user have the type '2', and see the the url http://www.mydomain.com/index.php
it have to be forward to > http://www.mydomain.com/index.php?view=mytheme
Thanks.

Answer 1

This is kinda dirty, but you could:
// Stole this from here: http://webcheatsheet.com/php/get_current_page_url.php
function curPageURL() {
$pageURL = 'http';
if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
$pageURL .= "://";
if ($_SERVER["SERVER_PORT"] != "80") {
$pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
} else {
$pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
}
return $pageURL;
}
$useCustomView = ((string)$_SESSION['user']->type) === '2';
$usingCustomView = isset($_GET["view"]);
// Redirect to custom view if user type is 2 and view is not already set
if ($useCustomView && !$usingCustomView) {
$newurl = curPageURL() . '?view=mytheme';
header("Location: $newurl");
}
This is the most basic example I can think of to accomplish what you're asking. This won't quite do the job if you want the URL to support longer query strings so it needs some work.