Conditionally hide Google Adsense snippet on a WordPress site using WP Code and ACF

index.php

<?php

// Check if ACF function `get_field()` exists. If it doesn't exist, display ads won't be shown.
// If it does exist and ACF 'hide_display_ads' value is not falsey, show display ads.
if(function_exists('get_field') && !get_field('hide_display_ads'))
{
  echo '<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-[your-adsense-id]" crossorigin="anonymous"></script>';
}