Easy way to change WHMCS URL in Smarty?

[paperweight]

This is a Smarty question for WHMCS, but I could not find the good answer on Smarty's website.

 

I want to manually create Language Selection buttons on my WHMCS template. My current code looks like this:

 

<a href="$_SERVER[REQUEST_URI]?language=french"><img src="templates/{$template}/img/flag-fr.png"></a> | <img src="templates/{$template}/img/flag-uk.png">

 

The code above works great if the WHMCS URL that the user is on does not have any ?something=anything attached to it. For example, if the URL is this:

 

http://domain.com/whmcs/clientarea.php

 

Then the code above will correctly display the link here:

 

http://domain.com/whmcs/clientarea.php?language=french

 

But if the WHMCS URL is this:

 

http://domain.com/whmcs/clientarea.php?action=details

 

then the code above will show a bad URL because it uses 2 "?" like this:

 

http://domain.com/whmcs/clientarea.php?action=details?language=french

 

So I am trying to figure a way to change the 2nd "?" to "&" so the URL looks correct like this:

 

http://domain.com/whmcs/clientarea.php?action=details&language=french

 

Any ideas or methods for doing that?

[brian!]

logically, the easiest way would be to first check if $_SERVER[REQUEST_URI] contains a '?' - if it doesn't, then you can use ?language= ... if it does, then you use &language=