Set Popup Maker Cookie after Form Submission Redirect

set_popup_cookie_on_confirmation.php

<?php // Ignore this first line when copying to your child theme's functions.php file.

/*
 * Form confirmation redirects can bypass Popup Maker's cookie settings.
 * 
 * If your form submission does a redirect, but you still need to set a popup cookie
 * to stop spamming people who already filled out your form, you can try setting
 * the cookie after the redirect.
 * 
 * This code snippet sets a popup cookie named 'pum-nnn' (nnn is your popup ID) in
 * the browser once the redirect post or page loads. Make sure your popup trigger
 * settings have the same cookie name (pum-nnn) attached to it.
 * 
 * Find your popup ID https://docs.wppopupmaker.com/article/409-find-the-popup-id#
 * 
 * Note: This code will run every time your redirect post/page loads in the browser.
 * So, try to make a dedicated redirect post/page that only your form knows about.
 */
function set_popup_cookie_on_confirmation() {
	// Uncomment and tweak the line you need. Comment out the line you don't need.
	// if ( is_page ( 'your-redirect-page' ) ) { // Use this line for pages.
	if ( is_single( 'gravity-forms-redirect-test-post' ) ) { // Use this line for posts.
?>
	<script type="text/javascript">
						
		jQuery(document).ready(function ($) {
    			PUM.setCookie(168, {expires: "+1 day", path: "/"}); // Change to your popup ID and expiration time.
			// Examples of valid expiration times https://www.php.net/manual/en/function.strtotime.php#refsect1-function.strtotime-examples
		}); // jQuery
				
	</script>
<?php
	} // if
}
add_action( 'wp_footer', 'set_popup_cookie_on_confirmation', 500 ); // We need a priority of 500 or more to run on popups.

/**
 * You can add the PHP code snippet to your child theme's functions.php file
 * or with third-party plugins such as My Custom Functions and Code Snippets.
 *
 * Learn more:
 * - https://docs.wppopupmaker.com/article/84-getting-started-with-custom-js
 * - https://docs.wppopupmaker.com/article/552-getting-started-with-custom-php
 */

For current Popup Maker plugin:
https://gist.github.com/danieliser/07e71479187150721afec430ae8c9775?permalink_comment_id=4396725#gistcomment-4396725