Google Analytics Add To WordPress

<?php
/*
Plugin Name: WordPress Simple Google Analytics Plugin 
Description: Lägger till Google Analytics-kod i <head> eller <footer> genom WordPress-hook
* Version: 1.0
* Author: D. Andersson
* Author URI: https://dandersson.nu
*/

defined( 'ABSPATH' ) or exit;

function da_google_analytics() { ?>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-XXXXXXXXXXX-X"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'UA-XXXXXXXXX-X');
</script>
<?php }
add_action( 'wp_head', 'da_google_analytics', 10 );
echo $analytics;
}

If needed, you can set it use footer by changing line 23 to
add_action( 'wp_footer', 'da_google_analytics', 10 );