PMPro Redirect After Checkout to last visited URL

PMPro-Redirect-After-Checkout.php

<?php

/**
 * Paste the Code inside function.php file or use Code Snipet .
 */

/**
 * Store the last URL visited on each page load.
 */
function my_pmpro_redirect_to_referring_page_after_checkout_track() {
    if ( ! empty( $_SERVER['HTTP_REFERER'] ) ) {
        $last_url_viewed = $_SERVER['HTTP_REFERER'];
        
        global $post, $pmpro_pages;

        // Do not track the URL if we are on one of the PMPro pages.
        if ( $post && $pmpro_pages && in_array( strval( url_to_postid( $last_url_viewed ) ), $pmpro_pages, true ) ) {
            return;
        }

        // Set a cookie to store the last URL before checkout
        setcookie( 'my_pmpro_last_url_before_checkout', $last_url_viewed, time() + 3600, '/' );
    }
}
add_action( 'wp', 'my_pmpro_redirect_to_referring_page_after_checkout_track' );

/**
 * Redirect to last page instead of confirmation page after checkout.
 *
 * @param string $url The confirmation page URL to redirect to.
 *
 * @return string The updated confirmation page URL to redirect to.
 */
function my_pmpro_redirect_to_referring_page_after_checkout_redirect( $url ) {
    if ( isset( $_COOKIE['my_pmpro_last_url_before_checkout'] ) ) {
        $last_url = $_COOKIE['my_pmpro_last_url_before_checkout'];

        // Check if the last URL is safe and return it for redirection
        if ( wp_http_validate_url( $last_url ) ) {
            return $last_url;
        }
    }

    // If there's no valid last URL, return the original confirmation URL
    return $url;
}

/**
 * Add filter to redirect user after checkout.
 */
function my_pmpro_redirect_to_referring_page_after_checkout_filter() {
    add_filter( 'pmpro_confirmation_url', 'my_pmpro_redirect_to_referring_page_after_checkout_redirect' );
}
add_action( 'init', 'my_pmpro_redirect_to_referring_page_after_checkout_filter' );