检测页面是否被百度收录

[PHP]代码

    <?php
    /*
    * 检测百度是否收录网页 返回1则表示收录 返回0表示没有收录
    * @ param string $url传入的url
    *  powed by 回首
    */
    function checkBaidu($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 1;
        }else{
            return 0;
        }   
    }
      
    echo checkBaidu('http://www.adfsdfsdf.com/');
    ?>