send traffic to a certain page first time and if they hit back button to another

[jasonst78]

Hi everyone,

 

I am wondering if there is a way to implement something into this code that; (1) if the referer is set properly from google.com, it will always send the initial traffic to http://mysiteA.com; (2) but when the back button is pressed it will send them to the other links besides  http://mysiteA.com.

 

<?php
$ref = $_SERVER["HTTP_REFERER"];
if (strpos($ref,'google.com')!==FALSE) {
$urls = array
("http://mysiteA.com",
"http://mysiteB.com",
"http://mysiteC.com",
"http://mysiteD.com",
"http://mysiteE.com");

$url = $urls[array_rand($urls)];

header("Location: $url");
}
?> 

[jon23d]

The only way I can think of it is to use a dispatcher of some sort, or to use javascript.