Conditional Google Analytics code.

snippet.php

<?php
//hostname based google code, only run if on live site - By Tom Horak, modified by Tomas Mulder.
//placed right before closing head tag according to google best practice: https://support.google.com/analytics/answer/1008080?hl=en
$hostname = $_SERVER['HTTP_HOST']; //dev.zenman.com | localhost | Live server | etc..

switch ($hostname) {
    case 'localhost': //do nothing
        //echo '<!-- no google analytics code -->';
        break;
    case 'localhost:8888': //do nothing
        //echo '<!-- no google analytics code -->';
        break;
    case 'dev1.zenman.com': //do nothing
        //echo '<!-- no google analytics code -->';
        break;
    case 'test1.zenman.com': //do nothing
        //echo '<!-- no google analytics code -->';
        break;
    case 'stage1.zenman.com': //mimic live environment...
        ?>
            <script type="text/javascript">

              var _gaq = _gaq || [];
              _gaq.push(['_setAccount', 'UA-00000000-0']);
              _gaq.push(['_trackPageview']);

              (function() {
                var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
                ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
                var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
              })();

            </script>
        <?php
        break;
    default: //this is what you get on live server
        ?>
            <script type="text/javascript">

              var _gaq = _gaq || [];
              _gaq.push(['_setAccount', 'UA-00000000-0']);
              _gaq.push(['_trackPageview']);

              (function() {
                var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
                ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
                var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
              })();

            </script>
        <?php
        break;
}
?>