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

class HttpRequest{ // class start

private $_ip = '';
private $_host = '';
private $_url = '';
private $_port = '';
private $_errno = '';
private $_errstr = '';
private $_timeout = 15;
private $_fp = null;

private $_formdata = array();
private $_filedata = array();

// 设置连接参数
public function setConfig($config){
$this->_ip = isset($config['ip'])? $config['ip'] : '';
$this->_host = isset($config['host'])? $config['host'] : '';
$this->_url = isset($config['url'])? $config['url'] : '';
$this->_port = isset($config['port'])? $config['port'] : '';
$this->_errno = isset($config['errno'])? $config['errno'] : '';
$this->_errstr = isset($config['errstr'])? $config['errstr'] : '';
$this->_timeout = isset($confg['timeout'])? $confg['timeout'] : 15;

// 如没有设置ip，则用host代替 
if($this->_ip==''){ 
  $this->_ip = $this->_host; 
} 

}

// 设置表单数据
public function setFormData($formdata=array()){
$this->_formdata = $formdata;
}

// 设置文件数据
public function setFileData($filedata=array()){
$this->_filedata = $filedata;
}

// 发送数据
public function send($type='get'){

$type = strtolower($type); 

// 检查发送类型 
if(!in_array($type,array('get','post','multipart'))){ 
  return false; 
} 

// 检查连接 
if($this->connect()){ 

  switch($type){ 
    case 'get': 
      $out = $this->sendGet(); 
      break; 

    case 'post': 
      $out = $this->sendPost(); 
      break; 

    case 'multipart': 
      $out = $this->sendMultipart(); 
      break; 
  } 

  // 空数据 
  if(!$out){ 
    return false; 
  } 

  // 发送数据 
  fputs($this->_fp,$out); 

  // 读取返回数据 
  $response = ''; 

  while($row = fread($this->_fp,4096)){ 
    $response .= $row; 
  } 

  // 断开连接 
  $this->disconnect(); 

  $pos = strpos($response,"rnrn"); 
  $response = substr($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,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 = $this->_url.'?'.http_build_query($this->_formdata); 

$out = "GET ".$url." http/1.1rn"; 
$out .= "host: ".$this->_host."rn"; 
$out .= "connection: closernrn"; 

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? $this->_formdata : array(); 

// file data 
if($this->_filedata){ 
  foreach($this->_filedata as $filedata){ 
    if(file_exists($filedata['path'])){ 
      $data[$filedata['name']] = file_get_contents($filedata['path']); 
    } 
  } 
} 

if(!$data){ 
  return false; 
} 

$data = http_build_query($data); 

$out = "POST ".$this->_url." http/1.1rn"; 
$out .= "host: ".$this->_host."rn"; 
$out .= "content-type: application/x-www-form-urlencodedrn"; 
$out .= "content-length: ".strlen($data)."rn"; 
$out .= "connection: closernrn"; 
$out .= $data; 

return $out; 

}

// multipart 方式,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)),10); 

$data = '--'.$boundary."rn"; 

// form data 
$formdata = ''; 

foreach($this->_formdata as $key=>$val){ 
  $formdata .= "content-disposition: form-data; name="".$key.""rn"; 
  $formdata .= "content-type: text/plainrnrn"; 
  if(is_array($val)){ 
    $formdata .= json_encode($val)."rn"; // 数组使用json encode后方便处理 
  }else{ 
    $formdata .= rawurlencode($val)."rn"; 
  } 
  $formdata .= '--'.$boundary."rn"; 
} 

// file data 
$filedata = ''; 

foreach($this->_filedata as $val){ 
  if(file_exists($val['path'])){ 
    $filedata .= "content-disposition: form-data; name="".$val['name'].""; filename="".$val['filename'].""rn"; 
    $filedata .= "content-type: ".mime_content_type($val['path'])."rnrn"; 
    $filedata .= implode('',file($val['path']))."rn"; 
    $filedata .= '--'.$boundary."rn"; 
  } 
} 

if(!$formdata && !$filedata){ 
  return false; 
} 

$data .= $formdata.$filedata."--rnrn"; 

$out = "POST ".$this->_url." http/1.1rn"; 
$out .= "host: ".$this->_host."rn"; 
$out .= "content-type: multipart/form-data; boundary=".$boundary."rn"; 
$out .= "content-length: ".strlen($data)."rn"; 
$out .= "connection: closernrn"; 
$out .= $data; 

return $out; 

}
} // class end

?>

$config = array(
'ip' => 'demo.fdipzone.com',// 如空则用host代替
'host' => 'demo.fdipzone.com','port' => 80,'errno' => '','errstr' => '','timeout' => 30,'url' => '/getapi.php',//'url' => '/postapi.php',//'url' => '/multipart.php'
);

$formdata = array(
'name' => 'fdipzone','gender' => 'man'
);

$filedata = array(
array(
'name' => 'photo','filename' => 'photo.jpg','path' => 'photo.jpg'
)
);

$obj = new HttpRequest();
$obj->setConfig($config);
$obj->setFormData($formdata);
$obj->setFileData($filedata);
$result = $obj->send('get');
//$result = $obj->send('post');
//$result = $obj->send('multipart');

echo '

';

print_r($result);

echo '

';

?>