Check email TLD for email condition

Verify the top-level domain (TLD) of an email address for a specific condition.

add_filter('advanced_woo_discount_rules_check_tld_from_email_condition', function($emailDomain, $email){
	 $emailArray = explode('@', $email);
        if (isset($emailArray[1])) {
            $emailDomainArray = explode('.', $emailArray[1]);
            if (count($emailDomainArray) > 2) {
                unset($emailDomainArray[0], $emailDomainArray[1]);
            }
            return implode('.', $emailDomainArray);
        }
	return $emailDomain;
});