CODEWITHSUNDEEP
javascriptphp
Red Acid
Red Acid

Reputation: 217

HTTP_REFERER not working on javascript src

Scenario: I want to detect from which website my visitors are coming from an javacript SRC.

Visitor from google.com ----> My Website(Detect if visitor come from google) 

<script type="text/javascript" src="ref.php"></script>

refer.php

<?php
if (strstr($_SERVER['HTTP_REFERER'], 'google.com') !== false) {
    header("Location: http://mywebsite.com/organic-traffic.js");
} 
else {
    header("Location: http://mywebsite.com/frequent-visitors.js");
}
?>

The above PHP code doesn't work. But if I use normal javascript "document.referrer" its detected.

If I access the file ref.php directly then the refer is detected also. Looks like its taking My website as referral and not google.com

Upvotes: 0

Views: 1022

Answers (3)

Niet the Dark Absol
Niet the Dark Absol

Reputation: 324650

The problem is that the referer of the script is the page that includes the script. Not the page you came from before getting to that page.

What you could do is:

<script type="text/javascript" src="ref.php?referer=<?php
    echo urlencode($_SERVER['HTTP_REFERER']);
?>"></script>

Then you have free access to $_GET['referer'] instead of $_SERVER['HTTP_REFERER'] inside ref.php :)

Upvotes: 1

hex494D49
hex494D49

Reputation: 9235

This is a pure javascript solution, as you asked for it 

(document.referrer.match(/^https?:\/\/([^\/]+\.)?google\.com(\/|$)/i))
    ? document.write("\<script src='http://domain/hello-google.js' type='text/javascript'>\<\/script>"); 
    : document.write("\<script src='http://domain/hello-kitty.js' type='text/javascript'>\<\/script>");

1st UPDATE

Well, if you want to do it from a PHP file or snippet, then you can do it this way

<script type="text/javascript" src="
<?php
if (preg_match('/^https?:\/\/([^\/]+\.)?google\.com(\/|$)/', $_SERVER['HTTP_REFERER'])){
    echo "http://domain/hello-google.js"; 
}else{
    echo "http://domain/hello-kitty.js"; 
}   
?>"></script>

I believe you want to load a different .js file depending on referrer but not redirecting to a .js file since It doesn't make any sense.

2nd UPDATE

Just another silly thing; somehow I believe you just put my snippet into your ref.php but it won't work that way - since you're including PHP file your first line (the javascript directive) should look like this 

<script type="text/javascript" src="<?php include('ref.php'); ?>"></script>

Upvotes: 0

irotaev
irotaev

Reputation: 69

If u use mor_rewrite to redirect to your ref.php HTTP_REFERER will be NULL. If you do it, you add some code to .htaccess like this:

RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !www.example.com [NC]
RewriteRule \.php$ - [F,NC]

If you use ajax, also you should send Referer header by yourself. And so on. If Referer doesn't exests, so request send without it and u should simply add Referer header by yourself

Upvotes: 0

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