rewrite cpt url

function register_rewrite_rules()
{
    // only needed if rewrite => false (in register_post_type)
    global $wp_rewrite;
    $permalink_structure = '/escort/%post_id%/%postname%/';
    $wp_rewrite->add_permastruct('escort', $permalink_structure, false);
    $wp_rewrite->flush_rules();
}

function escort_permalink($permalink, $post_id, $leavename = false) {
    $post               = get_post($post_id);
    $new_permalink      = $permalink;

    if (is_object($post) && get_post_type($post) == 'escort') {
        $escort_name    = get_field('dvp_name', $post_id);
        $escort_city    = get_field('dvp_city', $post_id);

        $rewritecode    = array(
            '%post_id%',
            '%city%',
            '%escortname%',
            $leavename? '' : '%postname%',
        );

        if ( '' != $permalink && !in_array($post->post_status, array('draft', 'pending', 'auto-draft')) ) {
            $rewritereplace     = array(
                $post->ID,
                strtolower($escort_city),
                strtolower($escort_name),
                $post->post_name
            );
            $new_permalink = str_replace($rewritecode, $rewritereplace, $permalink);
        } else {
            // if they're not using the fancy permalink option
        }
    }
    return $new_permalink;
}

function my_rewrite_urls() {
    $this->dvp_cct_rewrite_urls('escort', 'escort');
}

function dvp_cct_rewrite_urls($post_type, $base)
{
    // var_dump($postid);
    add_rewrite_rule(
        sprintf('^%s/([^/]+)$', $base),
        sprintf('index.php?post_type=%s&%s=$matches[1]', $post_type, $post_type),
        'top'
    );
}