百度站点地图sitemap.xml生成代码

百度目前还没有开放站点地图数据提交，但可以通过，百度站长工具的开放适配提交更新数据。

function sitemapxml(){
	$user = M('sethouse');//thinkphp 数据链接
	$today = date("Y-m-d",time());
	$yesterday  = mktime(0, 0, 0, date("m")  , date("d")-1, date("Y"));
	$lastweek = strtotime("-1 week");
	$link = M();
	$yesterdayArr = $link->query("select * from pre_sethouse where status=1 and time>$yesterday");//昨天
	$lastweekArr = $link->query("select * from pre_sethouse where  status=1 and time>$lastweek");//上周
	$url = "http://www.xxx.com/House/housecontent/id/";
	foreach($yesterdayArr as $k=>$v){
		$data_array[$k]['loc'] = $url.$v['hid'];
		$data_array[$k]['lastmod'] = $today;
		$data_array[$k]['changefreq'] = 'always';
		$data_array[$k]['priority'] = '0.6';
		$data_array[$k]['data'] = '';
	}
	$content=''.chr(13).'';
	$content.='
	http://www.xxx.com
	'.$today.'
	always
	0.9


	foreach($data_array as $data){
		$content.=create_item($data);
	}
	$content.='
	$fp=fopen('sitemap.xml','w+');
	fwrite($fp,$content);
	fclose($fp);
}
function create_item($data){
    $item="\n";
    $item.="".$data['loc']."\n";
    $item.="".$data['lastmod']."\n";
    $item.="".$data['changefreq']."\n";
    $item.="".$data['priority']."\n";
	$item.="".$data['data']."\n";
    $item.="
    return $item;
}