Add Google Analytics

gistfile1.txt

/**
 * GA
 */
function _thz_action_add_ga(){
	$GAcode = 'XX-XXXXXX-X'; // change with your GA tracking code
	echo '<script async src="https://www.googletagmanager.com/gtag/js?id=UA-63305981-2"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag(\'js\', new Date()); gtag(\'config\', \''.$GAcode.'\'); </script>';
}
add_action('wp_footer', '_thz_action_add_ga');