function post_request($url, $data, $referer=\'\') {
  // Convert the data array into URL Parameters like a=b&foo=bar etc.
  $data = http_build_query($data);
  // parse the given URL
  $url = parse_url($url);
  if ($url[\'scheme\'] != \'http\') { 
    die(\'Error: Only HTTP request are supported !\');
  }
  // extract host and path:
  $host = $url[\'host\'];
  $path = $url[\'path\'];
  // open a socket connection on port 80 - timeout: 30 sec
  $fp = fsockopen($host, 80, $errno, $errstr, 30);
  if ($fp){
    // send the request headers:
    fputs($fp, \"POST $path HTTP/1.1\\r\\n\");
    fputs($fp, \"Host: $host\\r\\n\");
    if ($referer != \'\')
      fputs($fp, \"Referer: $referer\\r\\n\");
    fputs($fp, \"Content-type: application/x-www-form-urlencoded\\r\\n\");
    fputs($fp, \"Content-length: \". strlen($data) .\"\\r\\n\");
    fputs($fp, \"Connection: close\\r\\n\\r\\n\");
    fputs($fp, $data);
    $result = \'\'; 
    while(!feof($fp)) {
      // receive the results of the request
      $result .= fgets($fp, 128);
    }
  }
  else { 
    return array(
      \'status\' => \'err\', 
      \'error\' => \"$errstr ($errno)\"
    );
  }
  // close the socket connection:
  fclose($fp);
  // split the result header from the content
  $result = explode(\"\\r\\n\\r\\n\", $result, 2);
  $header = isset($result[0]) ? $result[0] : \'\';
  $content = isset($result[1]) ? $result[1] : \'\';
  // return as structured array:
  return array(
    \'status\' => \'ok\',
    \'header\' => $header,
    \'content\' => $content
  );
}
//使用方法
// Submit those variables to the server
$post_data = array(
  \'test\' => \'foobar\',
  \'okay\' => \'yes\',
  \'number\' => 2
);
// Send a request to example.com 
$result = post_request(\'http://www.example.com/\', $post_data);
if ($result[\'status\'] == \'ok\'){
  // Print headers 
  echo $result[\'header\']; 
  echo \'<hr />\';
  // print the result of the whole request:
  echo $result[\'content\'];
}
else {
  echo \'A error occured: \' . $result[\'error\']; 
}