如何在CodeIgniter中获取其get请求的当前url？

This is my current url:

http://myhost/main?my_id=1,3

How can I get this url in CodeIgniter, and is it included with 'my_id'?

NOTE:

I mean when echo $url, it shows like this: http://myhost/main?my_id=1,3

simple get like this

echo $this->input->get('my_id');

Load the URL helper To get current url

$currentURL = current_url(); //http://myhost/main

$params   = $_SERVER['QUERY_STRING']; //my_id=1,3

$fullURL = $currentURL . '?' . $params; 

echo $fullURL;   //http://myhost/main?my_id=1,3

Note : make sure that query string is not empty and then concatenate .