PHP自动生成sitemap

$thread = DB::fetch_all("SELECT * FROM ".DB::table('forum_thread')." ORDER BY tid DESC");

// 创建一个DOMDocument对象

$dom = new DOMDocument("1.0","utf-8");

header("Content-Type: text/xml");

// 创建根节点

$root = $dom->createElement("urlset");

$dom->appendChild($root);

foreach($thread as $value){

    // 建立根下子节点track

    $track = $dom->createElement("url");

    $root->appendChild($track);

    // 建立track节点下元素

    $loc = $dom->createElement("loc");

        $track->appendChild($loc);

    $priority = $dom->createElement("priority");

        $track->appendChild($priority);

    $lastmod = $dom->createElement("lastmod");

        $track->appendChild($lastmod);

    $changefreq = $dom->createElement("changefreq");

        $track->appendChild($changefreq);

    // 赋值

    $text = $dom->createTextNode('http://localhost/thread-'.$value[tid].'-1-1.html');

    $loc->appendChild($text);

    $date = date("Y-m-d",time());

    $text = $dom->createTextNode($date);

    $lastmod->appendChild($text);

    $text = $dom->createTextNode(daily);

    $changefreq->appendChild($text);

    $text = $dom->createTextNode(0.8);

    $priority->appendChild($text);

}

//生成xml文件

$dom->save("sitemap.xml");exit;