php fsockopen函数发送post,get请求获得网页内容（反防采集）_PHP教程

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

*/

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$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);
 }