Capture Original URL's GET / POST values? - php

Question

I'm testing something. I would like to redirect my website (http://mywebsite.com) to a Landing Page (http://landingpage.com) ONLY when I pass a GET value. For example: id=23. So when it exists the page redirects.
My questions is that is there any script with the I can capture the list where I got redirected? I want the full link, like: http://mywebsite.com/index.php?id=23
Is there any possibility to capture that?
Also is there any possiblity to do the same with POST and capture that POST value on the Landing Page?

Answer 1

FOR GET:
You can simply attach $_SERVER['QUERY_STRING'] to the landingpage:
<?php
$get = ($_SERVER['QUERY_STRING']) ? "?".$_SERVER['QUERY_STRING']: "";
$url = 'http://landingpage.com'.$get;
header("Location: $url");
?>
FOR POST: use CURL
if($_POST){
$ch = curl_init();
$curlConfig = array(
CURLOPT_URL => "http://landingpage.com",
CURLOPT_POST => true,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POSTFIELDS => $_POST,
);
curl_setopt_array($ch, $curlConfig)
$result = curl_exec($ch);
curl_close($ch);
}

Answer 2

Why not just store the data in a session variable? All you have to do is start the session again on the redirected page, and retrieve the session variables there.
Tutorial if you're not already aware of it: http://www.tizag.com/phpT/phpsessions.php
For example, on mywebsite.com:
session_start();
if (isset($_REQUEST['id'])) {
$_SESSION['id'] = $_REQUEST['id'];
$_SESSION['url'] = "http://" . $_SERVER['SERVER_NAME'] . $_SERVER['PHP_SELF'];
}
on landingpage.com:
session_start();
$url = $_SESSION['url'] . '?id=' . $_SESSION['id'];
echo $url;
Although pretty sure this won't work if the pages are stored on two different servers, so I may be misunderstanding the question. If it's between servers, you could use a cookie instead.