mu_plugin not inserting html code in head tag through wp_head

I am trying to insert code in head tag through mu_plugin. I don't know why head tag is not updating by using add_action('wp_head', 'my_function') and add_action('init', 'my_function2'). My code example as following.

        <?php
/**
 * Must-Use Functions
 * @package WordPress
 * @subpackage some_code
 */
class some_code

    {
    public

    function __construct()
        {
        add_action('init', 'change_url');
        add_action('wp_head', 'print_header_scripts');
        }

    function change_url()
        {
        $domain_name = $_SERVER['SERVER_NAME'];
        $country_code = get_country_code();
        if ($country_code == "PK")
            {
            header("location: http://///////////////");
            exit();
            }
          else
        if ($country_code == "AU" && $domain_name !== "au.cacricketbats.com")
            {

                header("location: https:///////////////////" . 
parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH));
            exit();
            }
        }
    }

public

function print_header_scripts()
    {
?> /***************************************************************************/
    <script>
      (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
      (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
      m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
      })(window,document,'script','//www.google-analytics.com/analytics.js','ga');

      ga('create', 'UA-xxxxxxxxx-x', 'auto');
      ga('send', 'pageview');
    </script>"
    <?php
    }
}

$myCode = new some_code();
?>

I've also check that wp_head() is also use in head of my wordpress theme. Kindly help me thanks

via Chebli Mohamed