optimize a Preg_match rule

I made this script to get the url and extract the value of the info variable. It works great, but I need to know if there is a better way to rewrite this to be a smaller amount of code. I think it is quite bulky looking.

It can be tested by simply using a url like this:
http://www.domain.com/somepage.ext?info=testdata&blah=moretests

It should only echo: testdata


$s = preg_match("/\\?info=(.*)([&])/i", $_SERVER['REQUEST_URI'], $matches);
      if ($s !== false)
            {
            $tmp = str_replace('&', '', $matches[0]);
            echo $info = str_replace('?info=', '', $tmp);
            }