Minimalistic Google Analytics plugin that lets you add one or more trackers and control exactly how the script is rendered.
Wordpress.org Plugin page: https://wordpress.org/plugins/multi-google-analytics/
wp_footer()
Let's say you have 2 trackers UA-00000000-1 and UA-00000000-2. Here's what the plugin will print on the page (via /frontend/ga-script.php):
<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','https://www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-00000000-1', 'auto', 'tracker_0');
ga('tracker_0.send', 'pageview');
ga('create', 'UA-00000000-2', 'auto', 'tracker_1');
ga('tracker_1.send', 'pageview');
</script>Naturally, the plugin works fine if you just have a single tracker.
Read more about dealing with multiple Google Analytics trackers here: https://developers.google.com/analytics/devguides/collection/analyticsjs/creating-trackers#working_with_multiple_trackers