Php 使用 fsockopen发送http请求

<?php
      function HTTP_Post($URL,$data, $referrer="") { 

        // parsing the given URL
        $URL_Info=parse_url($URL); 

        // Building referrer
        if($referrer=="") // if not given use this script as referrer
          $referrer=$_SERVER["SCRIPT_URI"]; 

        // making string from $data
        foreach($data as $key=>$value)
          $values[]="$key=".urlencode($value);
        $data_string=implode("&",$values); 

        // Find out which port is needed - if not given use standard (=80)
        if(!isset($URL_Info["port"]))
          $URL_Info["port"]=80; 

        // building POST-request:
        $request.="POST ".$URL_Info["path"]." HTTP/1.1\n";
        $request.="Host: ".$URL_Info["host"]."\n";
        $request.="Referer: $referer\n";
        $request.="Content-type: application/x-www-form-urlencoded\n";
        $request.="Content-length: ".strlen($data_string)."\n";
        $request.="Connection: close\n";
        $request.="\n";
        $request.=$data_string."\n"; 

        $fp = fsockopen($URL_Info["host"],$URL_Info["port"]);
        fputs($fp, $request);
        while(!feof($fp)) {
            $result .= fgets($fp, 128);
        }
        fclose($fp); 

        return $result;
      } 

      $output1=HTTP_Post("http://www.example.com/script1.php",$_POST);
      $output2=HTTP_Post("http://www.example.net/script2.php",$_POST);
?>

注意：

Host：对应的值不能带有http://