php检测网页是否被百度收录的函数代码

使用：传入一个网址，如 http://jb51.cc/article/1.html ，返回1，代表已经收录；返回0，代表百度没有收录。

代码如下:

PHP
header("Content-type: text/html; charset=utf-8");

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,'/')) {
$narr = explode('/',$arr['query']);
$arr['query'] = $narr[0];
}

if (strpos($rs,''.$arr['query'].'')) {
return 1;
} else {
return 0;
}
}

echo checkBaidu('http://jb51.cc/article/1.html');
?>

上面程序执行结果：1