废话不多说，先来创建数据库：

--keep_image_uploads表 [在数据库wxdb中，如果没有该数据库，请先创建该数据库]CREATE TABLE IF NOT EXISTS keep_image_uploads (id int UNSIGNED PRIMARY KEY auto_increment,openid varchar(255) NOT NULL DEFAULT '',media_id varchar(128) NOT NULL DEFAULT '',media_path varchar(64) NOT NULL DEFAULT '') ENGINE = MyISAM DEFAULT CHARSET = utf8;

 

 

温馨提醒：

如果在测试的时候表里加了数据我们也可以通过这条sql语句来对数据表进行清空：

 

truncate table keep_image_uploads；

 

 

开工，index.php的代码如下：

 

     valid();//添加响应请求的语句$wechatObj->responseMsg();class wechatCallbackapiTest{    public function valid()    {        $echoStr = $_GET["echostr"];        //valid signature , option        if($this->checkSignature()){            echo $echoStr;            exit;        }    }    public function responseMsg()    {        //get post data, May be due to the different environments        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];                  //extract post data        if (!empty($postStr)){                /* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection,                   the best way is to check the validity of xml by yourself */                // 使用simplexml技术对xml进行解析                 // libxml_disable_entity_loader(true), 是从安全性考虑，为了防止xml外部注入，                //只对xml内部实体内容进行解析                libxml_disable_entity_loader(true);                //加载 postStr 字符串                  $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);                file_put_contents('abc.log', "\r\n\r\n". $postStr, FILE_APPEND);                $fromUsername = $postObj->FromUserName;                file_put_contents('abc.log', "\r\n\r\n". $fromUsername, FILE_APPEND);                $toUsername = $postObj->ToUserName;                file_put_contents('abc.log', "\r\n\r\n". $toUsername, FILE_APPEND);                $keyword = trim($postObj->Content);                $time = time();                global $tmp_arr;                //根据接收到的消息类型，来进行分支处理(switch)                switch($postObj->MsgType)                {                    case 'event':                        if($postObj->Event == 'subscribe')                        {                                                        $contentStr = "欢迎关注leigood微信测试号噢";                            $resultStr = sprintf($tmp_arr['text'], $fromUsername, $toUsername, $time, $contentStr);                            echo $resultStr;                         }                        break;                    case 'text': //回复文本模块                        //必须是以“图片”开头，后面并且是以数字结尾                        if(preg_match("/^图片([0-9][0-9]*)$/u",$keyword,$matches)){                            $connect = mysql_connect('localhost','root','root');                            mysql_select_db('wxdb',$connect);                            mysql_query('set names utf8');                            $matches = array();                            preg_match("/^图片([0-9][0-9]*)$/u",$keyword,$matches);                             $sql = "select media_id from keep_image_uploads where id=$matches[1]";                            $res = mysql_query($sql,$connect);                            if($row = mysql_fetch_assoc($res)){                                //先取出么media_id                                $media_id = $row['media_id'];                                $resultStr = sprintf($tmp_arr['image'], $fromUsername, $toUsername, $time, $media_id);                                echo $resultStr;                            }else{                                $contentStr = '该图片还没上传噢！';                                $resultStr = sprintf($tmp_arr['text'], $fromUsername, $toUsername, $time, $contentStr);                                echo $resultStr;                            }                        }else{                            $contentStr = '您输入的格式有误';                            $resultStr = sprintf($tmp_arr['text'], $fromUsername, $toUsername, $time, $contentStr);                            echo $resultStr;                        }                        break;                    case 'image': //处理用户上传图片                        $media_id = $postObj -> MediaId; //获取到用户上传的图片的mediaid                        $resultStr = sprintf($tmp_arr['image'], $fromUsername, $toUsername, $time, $media_id);                        echo $resultStr;                                                //将图片保存到本地服务器的文件系统                        //1.先给图片创建一个名字                        $image_file_name = time().'.jpg';                        //2.获取该图片的内容                        $image_file = file_get_contents($postObj->PicUrl);                        //3.保存到本地服务器的文件系统                        //提醒：一定要保证您创建的文件夹是www用户可读可写，否则无法保存该图片到文件夹下                        file_put_contents("./uploadimage/".$image_file_name,$image_file);                                                //将图片的路径和相关信息入库                        //1.创建一张表                        //2.链接mysql数据库，并且添加图片信息                        $connect = mysql_connect('localhost','root','root');                        mysql_select_db('wxdb',$connect);                        mysql_query('set names utf8');                        $media_path = "./uploadimage/".$image_file_name; //路径                        $sql = "insert into keep_image_uploads (id,openid,media_id,media_path) values(NULL,'{
   $fromUsername}','{
   $media_id}','{
   $media_path}')";                        mysql_query($sql,$connect);                        break;                                        }        }else {            echo "";            exit;        }    }            private function checkSignature()    {        // you must define TOKEN by yourself        if (!defined("TOKEN")) {            throw new Exception('TOKEN is not defined!');        }                $signature = $_GET["signature"];        $timestamp = $_GET["timestamp"];        $nonce = $_GET["nonce"];                        $token = TOKEN;        $tmpArr = array($token, $timestamp, $nonce);        // use SORT_STRING rule        sort($tmpArr, SORT_STRING);        $tmpStr = implode( $tmpArr );        $tmpStr = sha1( $tmpStr );                if( $tmpStr == $signature ){            return true;        }else{            return false;        }    }}?>

 

 

common.php代码如下：

 

      <<
     
      
       
       
       
       
       
        %s
       
       
       
       
       
       
        0
       
      XML,    'image'=> <<
      
       
        
        
        
        
        
         %s
        
        
        
        
        
        
       XML    );