php 实现查询百度排名 php查询网站关键词百度排名函数

[代码]php代码：//查询关键词排名

function rank($keyword,$site){

$num="-";

$site=str_replace("http://","",$site);

$keyword=str_replace(" ","",$keyword);

$url="/s?rn=100&wd=".$keyword;

$content=file_get_contents($url);

if(count(explode("200",$http_response_header[0]))<2)

return "查询请求超时";

preg_match_all("/

$rs1=$tablearr[0];

foreach($rs1 as $v){

preg_match("/(.*)[\d]{4}-[\d]{1,2}-[\d]{1,2}/U",$v,$site_p);

$sitec=strip_tags($site_p[1]);

if(strpos($sitec,$site)!==false){

preg_match("/id=(.*)>

/U",$v,$id);

$num=preg_replace("/[^\d]/U","",$id[1]);

break;

}

}

return $num;

}

echo rank('PHP二次开发网',"");