XML Sitemap Generator

SitemapGenerator.php

<?php
/**
* Generate the sitemap_index file
*/
  function generate_main() {
    $main_xml = '<?xml version="1.0" encoding="UTF-8"?>';
    $main_xml .= "\n";
    $main_xml .= '<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">';
    $main_xml .= "\n\n";

    // Creates two sitemap links in sitemap_index. One for posts, and one for pages.
    $count = 0;
    while($count < 2) {
      $main_xml .= "<sitemap>\n";

      if($count == 0)
        $main_xml .= "\t<loc>\n\t\t" . get_home_url() . "/post-sitemap.xml\n";
      else
        $main_xml .= "\t<loc>\n\t\t" . get_home_url() . "/page-sitemap.xml\n";

      $main_xml .= "\t</loc>\n</sitemap>\n\n";
      $count++;
    }

    // Save the pages to a file
    $file = get_home_path() . '/sitemap_index.xml';
    $open = fopen($file, "a");
    ftruncate($open, 0);
    $main_xml .= "</sitemapindex>";
    fputs($open, $main_xml);
    fclose($open);
  }