Customize Forminator Hidden Field -> Embed URL to only save the last path of the URL

forminator_hidden_embed_url_last_path.php

<?php
/**
 * Plugin Name: [Forminator Pro] - Hidden Field -> Embed URL replace with last URL path.
 * Plugin URI: https://wpmudev.com/
 * Description: Hidden Field -> Embed URL replace with last URL path.
 * Author: Alfredo Galano Loyola @ WPMUDEV
 * Author URI: https://wpmudev.com/
 * License: GPLv2 or later
 */
if (!defined('ABSPATH')) {
    exit;
}
// No need to do anything if the request is via WP-CLI.
if (defined('WP_CLI') && WP_CLI) {
    return;
}

if (!class_exists('WPMUDEV_Forminator_Hidden_Field_URL_Last_Path')) {

    class WPMUDEV_Forminator_Hidden_Field_URL_Last_Path
    {
        /**
         * $forms used to define the form and the hidden field that will be used. It's possible use the feature in several forms
         * [forminator_form id="1049353"]
         */
        private $forms = array(
            1049353 => 'hidden-1',
        );

        private $embed_url;
        
        private static $_instance = null;

        public static function get_instance()
        {

            if (is_null(self::$_instance)) {
                self::$_instance = new WPMUDEV_Forminator_Hidden_Field_URL_Last_Path();
            }

            return self::$_instance;
        }

        private function __construct()
        {
            $this->init();
        }

        public function init()
        {
            // Do some checks here
            if (!defined('FORMINATOR_VERSION') || FORMINATOR_VERSION < '1.12' || !class_exists('Forminator_API')) {
                return;
            }

            
            add_filter('forminator_custom_form_submit_field_data', array($this, 'wpmudev_set_field_data'), 10, 2);

        }
        //Working with the submitted Data
        public function wpmudev_set_field_data($field_data_array, $form_id)
        {

            if (!in_array($form_id, array_keys($this->forms))) {
                return $field_data_array;
            }

            foreach ($field_data_array as $key => $field){
                
                if ($field['name'] === $this->forms[$form_id]) {
                    //Getting URL in the Hidden Field
                    $this->embed_url = $field['value'];
                    //Removing the Hidden Field
                    unset($field_data_array[$key]);
                }
  
            }
            
            //Getting the last Path of the URL
            $last_path = $this->get_embed_url_last_path($this->embed_url);
            
            //Recreating the Hidden Field
            $field_data_array[] = array(
                'name'     => $this->forms[$form_id],
                'value'    => $last_path,
                'field_array' => array(
                    'default_value' => 'custom_value',
                    'custom_value' => $last_path,
                )
            );
            return $field_data_array;
        }


        function get_embed_url_last_path($embed_url){
            $url_parts = explode("/", $embed_url);
            $linksArray = array_values(array_filter($url_parts));
            return $linksArray[count($linksArray)-1];
        }

    }

    add_action('plugins_loaded', function () {
        return WPMUDEV_Forminator_Hidden_Field_URL_Last_Path::get_instance();
    });
}