Modal on closing a page and can you add the bot check to the footer subscribe ?

Is it possible to load a modal on someone exiting the site / closing the page down ?

And in the footer we have the code below - is it possible to add the botcheck code to that as well due to Spam issues?

Many thanks

			<input type="text" id="template-contactform-botcheck" name="template-contactform-botcheck" value="" class="form-control" />

<div class="widget subscribe-widget clearfix">
<h5><strong>Subscribe</strong> to Our Newsletter for Family Office News & Topics</h5>
<div class="widget-subscribe-form-result"></div>
<form id="widget-subscribe-form" action="include/gardiole.php" method="post" class="nobottommargin">
<div class="input-group divcenter">
<div class="input-group-prepend">
<div class="input-group-text"><i class="icon-email2"></i></div>
</div>
<input type="email" id="widget-subscribe-form-email" name="widget-subscribe-form-email" class="form-control required email" placeholder="Enter your Email">
<div class="input-group-append">
<button class="btn btn-success" type="submit">Subscribe</button>
									</div>
								</div>
							</form>
						</div>

Hi there - please advise where exactly to put the botcheck code in the subscribe.php as I tried in a couple of places and the form did not work ?

<?php

use PHPMailer\PHPMailer\PHPMailer;

require 'phpmailer/src/PHPMailer.php';
require 'phpmailer/src/SMTP.php';

$toemails = array();

$toemails[] = array(
				'email' => 'domain.com', // Your Email Address
				'name' => 'Gavin Baylis' // Your Name
			);
		

// Form Processing Messages
$message_success = 'We have <strong>successfully</strong> received your Message and will get Back to you as soon as possible.';

$mail = new PHPMailer();

// If you intend you use SMTP, add your SMTP Code after this Line

if( isset( $_POST['widget-subscribe-form-email'] ) ) {
	if( $_POST['widget-subscribe-form-email'] != '' ) {

		$email = $_POST['widget-subscribe-form-email'];

		$subject = 'Subscribe me to the List';

		$mail->SetFrom( $email , 'New Subscriber' );
		$mail->AddReplyTo( $email );
		foreach( $toemails as $toemail ) {
			$mail->AddAddress( $toemail['email'] , $toemail['name'] );
		}
		$mail->Subject = $subject;

		$email = isset($email) ? "Email: $email

" : '';

		$referrer = $_SERVER['HTTP_REFERER'] ? '

This Form was submitted from: ' . $_SERVER['HTTP_REFERER'] : '';

		$body = "$email $referrer";

		$mail->MsgHTML( $body );
		$sendEmail = $mail->Send();

		if( $sendEmail == true ):
			echo '{ "alert": "success", "message": "' . $message_success . '" }';
		else:
			echo '{ "alert": "error", "message": "Email <strong>could not</strong> be sent due to some Unexpected Error. Please Try Again later.

<strong>Reason:</strong>
' . $mail->ErrorInfo . '" }';
		endif;
	} else {
		echo '{ "alert": "error", "message": "Please <strong>Fill up</strong> all the Fields and Try Again." }';
	}
} else {
	echo '{ "alert": "error", "message": "An <strong>unexpected error</strong> occured. Please Try Again later." }';
}

?>

Have tried that removing } in case it was that but did not work - this is the code

if( isset( $_POST['widget-subscribe-form-email'] ) ) {
	if( $_POST['widget-subscribe-form-email'] != '' ) {
	if( !empty( $_POST['widget-subscribe-form-botcheck'] ) ) {
	echo '{ "alert": "error", "message": "Bot Detected!" }';
	exit;
}

Also to help not recieving Spam - is it possible to add Company Name to the Subscribe form code in the Footer?

`<h4>Subscribe to Our Newsletter to get Important News about our Events:</h4>
<div class="widget-subscribe-form-result"></div>
<form id="widget-subscribe-form" action="include/footer-box.php" method="post" class="nobottommargin">
<div class="input-group divcenter">
<div class="input-group-prepend">
<div class="input-group-text"><i class="icon-email2"></i></div>
</div>
<input type="email" id="widget-subscribe-form-email" name="widget-subscribe-form-email" class="form-control required email" placeholder="Enter your Email">

<div class="hidden">
<input type="text" id="widget-subscribe-form-botcheck" name="widget-subscribe-form-botcheck" value="" class="form-control" />
</div>
<div class="input-group-append">
<button class="btn btn-success" type="submit">Subscribe</button>
</div>
</div>
</form>