Hi,
I’m trying to implement GA analytics with UserId tracking. This requires extra code, and must execute PHP inside the script tag.
The code should be something like:
<?php
    if (is_user_logged_in()) {
        $user = wp_get_current_user();
        $userName = $user->user_login;
    }
?>
<script>
    (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
    (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
    m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
    })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
    ga('create', 'UA-XXXX-1', 'auto');
    <?php if (isset($userName)) : ?>
        ga('set', 'userId', <?php echo(json_encode($userName)); ?>); // Set the user ID using signed-in user_id.
    <?php endif; ?>
    ga('send', 'pageview');
</script>
Will this work in the GA plugin? If I simply copy paste this? Or do I need to use child theme? In which case, do I edit functions.php?