php教程 fsockopen函数发送post,get请求获得网页内容（反防采集）
$post =1;
$url = parse_url($url);
$host ='http://www.bkjia.com';
$path ='/';
$query ='?action=php100.com';
$port =80;
if($post) {
$out = "post $path http/1.0rn";
$out .= "accept: */*rn";
//$out .= "referer: $boardurlrn";
$out .= "accept-language: zh-cnrn";
$out .= "content-type: application/x-www-form-urlencodedrn";
$out .= "user-agent: $_server[http_user_agent]rn";
$out .= "host: $hostrn";
$out .= 'content-length: '.strlen($post)."rn";
$out .= "connection: closern";
$out .= "cache-control: no-cachern";
$out .= "cookie: $cookiernrn";
$out .= $post;
} else {
$out = "get $path http/1.0rn";
$out .= "accept: */*rn";
//$out .= "referer: $boardurlrn";
$out .= "accept-language: zh-cnrn";
$out .= "user-agent: $_server[http_user_agent]rn";
$out .= "host: $hostrn";
$out .= "connection: closern";
$out .= "cookie: $cookiernrn";
}
$fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
if(!$fp)
{
return '';//note $errstr : $errno rn
} else {
return '成功访问';
}
/*
fsockopen语法
resource fsockopen ( string $hostname [, int $port = -1 [, int &$errno [, string &$errstr [, float $timeout = ini_get("default_socket_timeout") ]]]] )
启动一个套接字连接到指定的主机的资源。
php支持在互联网领域的目标和unix在所支持的套接字传输列表说明。所支持的传输列表也可以检索使用stream_get_transports（）。
该插座预设会被启用，阻塞模式。你可以切换到非阻塞模式使用stream_set_blocking（）。
如果上面实例看不懂，就来看个简的吧
*/
$fp = fsockopen("www.bkjia.com", 80, $errno, $errstr, 30);
if (!$fp) {
echo "$errstr ($errno)
n";
} else {
$out = "get / http/1.1rn";
$out .= "host: www.bkjia.comrn";
$out .= "connection: closernrn";
fwrite($fp, $out);
while (!feof($fp)) {
echo fgets($fp, 128);
}
fclose($fp);
}
