Global tag

functions.php

<?php

// =========================================================================
// ADD GOOGLE ANALYTICS GLOBAL TAG TO WP_HEAD
// =========================================================================
function add_global_tag_for_ads() { 
    echo '
        <!-- Global site tag (gtag.js) - Google Ads: ************ -->
        <script async src="https://www.googletagmanager.com/gtag/js?id=AW************script>
        <script>
            window.dataLayer = window.dataLayer || [];
            function gtag(){dataLayer.push(arguments);}
            gtag("js", new Date());
            
            gtag("config", "AW-************");
        </script>
    ';
 } 
 add_action('wp_head', 'add_global_tag_for_ads');