PHP实现支持GET,POST,Multipart/form-data的HTTP请求类

<"\r\n\r\n"); 
      $response = substr($response, $pos+4); 
 
      return $response; 
 
    }else{ 
      return false; 
    } 
  } 
 
  // 创建连接 
  private function connect(){ 
    $this->_fp = fsockopen($this->_ip, $this->_port, $this->_errno, $this->_errstr, $this->_timeout); 
    if(!$this->_fp){ 
      return false; 
    } 
    return true; 
  } 
 
  // 断开连接 
  private function disconnect(){ 
    if($this->_fp!=null){ 
      fclose($this->_fp); 
      $this->_fp = null; 
    } 
  } 
 
  // get 方式,处理发送的数据,不会处理文件数据 
  private function sendGet(){ 
 
    // 检查是否空数据 
    if(!$this->_formdata){ 
      return false; 
    } 
 
    // 处理url 
    $url = $this->_url.'"GET ".$url." http/1.1\r\n"; 
    $out .= "host: ".$this->_host."\r\n"; 
    $out .= "connection: close\r\n\r\n"; 
 
    return $out; 
  } 
 
  // post 方式,处理发送的数据 
  private function sendPost(){ 
 
    // 检查是否空数据 
    if(!$this->_formdata && !$this->_filedata){ 
      return false; 
    } 
 
    // form data 
    $data = $this->_formdata"POST ".$this->_url." http/1.1\r\n"; 
    $out .= "host: ".$this->_host."\r\n"; 
    $out .= "content-type: application/x-www-form-urlencoded\r\n"; 
    $out .= "content-length: ".strlen($data)."\r\n"; 
    $out .= "connection: close\r\n\r\n"; 
    $out .= $data; 
 
    return $out; 
  } 
 
  // multipart 方式,处理发送的数据,发送文件推荐使用此方式 
  private function sendMultipart(){ 
 
    // 检查是否空数据 
    if(!$this->_formdata && !$this->_filedata){ 
      return false; 
    } 
 
    // 设置分割标识 
    srand((double)microtime()*1000000); 
    $boundary = '---------------------------'.substr(md5(rand(0,32000)),0,10); 
 
    $data = '--'.$boundary."\r\n"; 
 
    // form data 
    $formdata = ''; 
 
    foreach($this->_formdata as $key=>$val){ 
      $formdata .= "content-disposition: form-data; name=\"".$key."\"\r\n"; 
      $formdata .= "content-type: text/plain\r\n\r\n"; 
      if(is_array($val)){ 
        $formdata .= json_encode($val)."\r\n"; // 数组使用json encode后方便处理 
      }else{ 
        $formdata .= rawurlencode($val)."\r\n"; 
      } 
      $formdata .= '--'.$boundary."\r\n"; 
    } 
 
    // file data 
    $filedata = ''; 
 
    foreach($this->_filedata as $val){ 
      if(file_exists($val['path'])){ 
        $filedata .= "content-disposition: form-data; name=\"".$val['name']."\"; filename=\"".$val['filename']."\"\r\n"; 
        $filedata .= "content-type: ".mime_content_type($val['path'])."\r\n\r\n"; 
        $filedata .= implode('', file($val['path']))."\r\n"; 
        $filedata .= '--'.$boundary."\r\n"; 
      } 
    } 
 
    if(!$formdata && !$filedata){ 
      return false; 
    } 
 
    $data .= $formdata.$filedata."--\r\n\r\n"; 
 
    $out = "POST ".$this->_url." http/1.1\r\n"; 
    $out .= "host: ".$this->_host."\r\n"; 
    $out .= "content-type: multipart/form-data; boundary=".$boundary."\r\n"; 
    $out .= "content-length: ".strlen($data)."\r\n"; 
    $out .= "connection: close\r\n\r\n"; 
    $out .= $data; 
 
    return $out; 
  } 
} // class end 
 
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