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

HttpRequest.class.php

<?php
/** HttpRequest class, HTTP请求类，支持GET,POST,Multipart/form-data
*   Date:   2013-09-25
*   Author: fdipzone
*   Ver:    1.0
*
*   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, "rnrn");
            $response = substr($response, $pos+4);  

            return $response;  

        }else{
            return false;
        }
    }  

    // 创建连接
	// 查看本栏目更多精彩内容：http://www.bianceng.cnhttp://www.bianceng.cn/webkf/PHP/
    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/1.1rn";
        $out .= "host: ".$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,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."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  

?>

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