custom sitemap

<?php

namespace RankMath\Sitemap\Providers;

defined( 'ABSPATH' ) || exit;

class Custom implements Provider {

    public function handles_type( $type ) {
        return 'seo-glossary' === $type;
    }

    public function get_index_links( $max_entries ) {
        return [
            [
                'loc'     => \RankMath\Sitemap\Router::get_base_url( 'seo-glossary-sitemap.xml' ),
                'lastmod' => '',
            ]
        ];
    }

    public function get_sitemap_links( $type, $max_entries, $current_page ) {
        $links = []; // Initialize the array to store the links

        $parent_permalink = get_permalink(457);
        if ($parent_permalink) {
            $links[] = [
                'loc'     => $parent_permalink,
                'lastmod' => get_post_modified_time('c', true, 457)
            ];
        }

        $pages = get_posts(array(
            'posts_per_page' => -1,
            'post_type'      => 'page', // Replace 'page' if you need another post type
            'post_status'    => 'publish' // Ensure only published posts are included
        ));

        foreach ($pages as $p) {
            if ($p->post_parent == 457) {
                $links[] = [
                    'loc'     => get_permalink($p), // Add the page's permalink
                    'lastmod' => get_post_modified_time('c', true, $p) // Add last modified date in ISO 8601 format
                ];
            }
        }

        return $links;
    }
}