Added hCaptcha to WHMCS contact form

[robetus]

I have successfully added hCaptcha to my WHMCS checkout using the hook:

<?php

if (!defined("WHMCS")) die("This file cannot be accessed directly");

function limitOrders($vars)
	{
	$url = 'https://hcaptcha.com/siteverify';
	$privatekey = "my-private-key";
	$response = file_get_contents($url . "?secret=" . $privatekey . "&response=" . $_POST['g-recaptcha-response'] . "&remoteip=" . $_SERVER['REMOTE_ADDR']);
	$data = json_decode($response);
	if (isset($data->success) AND $data->success == true)
		{
		// everything is ok!
		}
	  else
		{
			{
			global $errormessage;
			$errormessage.= "<li> Please, confirm that you are not a robot! <br/></li>";
			} //if CC
		}
	} //function
	
add_hook("ShoppingCartValidateCheckout", 1, "limitOrders");

and the following html code in checkout.tpl:

<script src="https://www.hcaptcha.com/1/api.js" async defer></script>
                    <center><div class="h-captcha" data-sitekey="my-sitekey"></div></center><br>

Is there an easy to make this work on the submitticket.php?step=2 page which is what I use for my contact form? Recaptcha doesn't work well for my site and I'm getting to much spam with WHMCS' built in captcha which is really bad.