php HTTP请求类(支持GET,POST,Multipart/form-data)

<?php 
/** HttpRequest class, HTTP请求类，支持GET,POST,Multipart/form-data
*   Date:   2013-09-25
*   Author: fdipzone
*   Ver:    1.0
*   Edit: www.jbxue.com
*   Func:
*   public  setConfig     设置连接参数
*   public  setFormdata   设置表单数据
*   public  setFiledata   设置文件数据
*   public  send          发送数据
*   private connect       创建连接
*   private disconnect    断开连接
*   private sendGet       get 方式,处理发送的数据,不会处理文件数据
*   private sendPost      post 方式,处理发送的数据
*   private sendMultipart multipart 方式,处理发送的数据,发送文件推荐使用此方式
*/ 
 
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, "\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 = $this->_url.'?'.http_build_query($this->_formdata); 
         
        $out = "GET ".$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? $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/1.1\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 
?> 

<?php 
require('HttpRequest.class.php'); 
 
$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 '<pre>'; 
print_r($result); 
echo '</pre>';
?>