Detect whether the page is Baidu included

Why 80% of the code can not do farming architect? >>>  

Whether the query page is included in Baidu.

<?php
/*
* 检测网页是否被百度收录 
* @ param string $url
* @ return bool
*/

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;
	}
}

//for example
echo checkBaidu('http://www.ttlsa.com/html/1283.html');
?>

Reproduced in: https: //my.oschina.net/766/blog/211119