在Typecho文章页面添加是否被百度收录的功能

/**
* 提示文章百度是否收录
*
*/
function baidu_record() {
$url='http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];

if(checkBaidu($url)==1)
{echo "百度已收录";
}
else
{echo "<a style=\"color:red;\" rel=\"external nofollow\" title=\"点击提交收录！\" target=\"_blank\" href=\"http://zhanzhang.baidu.com/sitesubmit/index?sitename=$url\">百度未收录</a>";}
}
function checkBaidu($url) {
$url = 'http://www.baidu.com/s?wd=' . urlencode($url);
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$rs = curl_exec($curl);
curl_close($curl);
if (!strpos($rs, '没有找到')) { //没有找到说明已被百度收录
return 1;
} else {
return -1;
}
}

<?php echo baidu_record() ?>