php利用socket函数模拟发送http请求

来源：互联网发布：淘宝平台费用是多少编辑：程序博客网时间：2024/05/20 09:26
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<?php  
  
/* 
* Network: HTTP request object* Author: Li HouYu (Karajan Lee), Shanghai, China. 
*/  
class HttpRequest{  
          private $sHostAdd;//服务器ip  
          private $sUri;//请求的文件  
          private $iPort;//服务器端口  
          private $sRequestHeader;//请求头信息  
          private $sResponse;//请求信息  
          
        //构造函数  
      function __construct($sUrl){  
          $sPatternUrlPart = '/http:\/\/([a-z-\.0-9]+)(:(\d+)){0,1}(.*)/i';  
          $arMatchUrlPart = array();  
          preg_match($sPatternUrlPart, $sUrl, $arMatchUrlPart);  
          $this->sHostAdd = gethostbyname($arMatchUrlPart[1]);  
          if (empty($arMatchUrlPart[4])){  
            $this->sUri = '/';  
          }else{  
            $this->sUri = $arMatchUrlPart[4];  
          }  
          if (empty($arMatchUrlPart[3])){  
            $this->iPort = 80;  
          }else{  
            $this->iPort = $arMatchUrlPart[3];  
          }  
          $this->addRequestHeader('Host: '.$arMatchUrlPart[1]);  
          $this->addRequestHeader('Connection: Close');  
      }  
        
        
      //添加头信息  
      function addRequestHeader($sHeader){  
         $this->sRequestHeader .= trim($sHeader)."\r\n";  
      }  
        
      //发送请求  
      function sendRequest($sMethod = 'GET', $sPostData = ''){  
          $sRequest = $sMethod." ".$this->sUri." HTTP/1.1\r\n";  
          $sRequest .= $this->sRequestHeader;  
          if ($sMethod == 'POST'){  
              $sRequest .= "Content-Type: application/x-www-form-urlencoded\r\n";  
              $sRequest .= "Content-Length: ".strlen($sPostData)."\r\n";  
              $sRequest .= "\r\n";  
              $sRequest .= $sPostData."\r\n";  
          }  
          $sRequest .= "\r\n";  
          $sockHttp = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);  
          if (!$sockHttp){  
            die('socket_create() failed!');  
          }  
          $resSockHttp = socket_connect($sockHttp, $this->sHostAdd, $this->iPort);  
          if (!$resSockHttp){  
            die('socket_connect() failed!');  
          }  
          socket_write($sockHttp, $sRequest, strlen($sRequest));  
          $this->sResponse = '';  
          while ($sRead = socket_read($sockHttp, 4096)){  
            $this->sResponse .= $sRead;  
          }  
          socket_close($sockHttp);  
      }  
        
      //获取响应  
      function getResponse(){  
        return $this->sResponse;  
      }  
        
      //获取响应正文  
      function getResponseBody(){  
          $sPatternSeperate = '/\r\n\r\n/';  
          $arMatchResponsePart = preg_split($sPatternSeperate, $this->sResponse, 2);  
          return $arMatchResponsePart[1];  
      }  
        
      //获取响应头  
      function getResponseHead(){  
          $sPatternSeperate = '/\r\n\r\n/';  
          $arMatchResponsePart = preg_split($sPatternSeperate, $this->sResponse, 2);  
          return $arMatchResponsePart[0];  
      }  
}  
  
  
$url='http://www.baidu.com';  
$httpRequest=new HttpRequest($url);  
$httpRequest->sendRequest();  
file_put_contents('temp.txt',$httpRequest->getResponse());  
echo $httpRequest->getResponseBody();  
  
  
  
?>  
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