php检测url是否被百度收录示例代码

<?php
function checkbaidu($url){
$url='http://www.baidu.com/s?wd='.$url;
$curl=curl_init();
curl_setopt($curl,curlopt_url,$url);
curl_setopt($curl,curlopt_returntransfer,1);
$rs=curl_exec($curl);
curl_close($curl);
$arr=parse_url($url);
if(strpos($arr['query'],'http://')){
$arr['query']=str_replace('http://','',str_replace('wd=','',$arr['query']));
}else{
$arr['query']=str_replace('wd=','',$arr['query']);
}
if(strpos($arr['query'],'?')){
$str=strstr($arr['query'],'?');
$arr['query']=str_replace($str,'',$arr['query']);
}
if(strpos($arr['query'],'/')){
$narr=explode('/',$arr['query']);
$arr['query']=$narr[0];
}
if(strpos($rs,'<b>'.$arr['query'].'</b>')){
return '收录';
}else{
return '未收录';
}
}
echo checkbaidu('www.sjyhome.com');
?>