微信公众平台安全模式消息体签名及加解密PHP代码示例_php 微信公众号消息加解密-优快云博客

从微信官网下载示例代码，把下面代码覆盖demo.php即可，如有疑惑欢迎私密。
<?php
/*
    椰子园  http://www.yeziyuan.com
	email   coconutgarden@sina.com
    CopyRight 2014 All Rights Reserved
*/
define("TOKEN", "thisisyourselftoken");
define("AppID", "nowisyourappid");
define("EncodingAESKey", "hereisyourselfencodekay43bit");
require_once('wxBizMsgCrypt.php');

$wechatObj = new wechatCallbackapiTest();
if (!isset($_GET['echostr'])) {
    $wechatObj->responseMsg();
}else{
    $wechatObj->valid();
}

class wechatCallbackapiTest
{
    //验证签名
    public function valid()
    {
        $echoStr = $_GET["echostr"];
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];
        $tmpArr = array(TOKEN, $timestamp, $nonce);
        sort($tmpArr);
        $tmpStr = implode($tmpArr);
        $tmpStr = sha1($tmpStr);
        if($tmpStr == $signature){
            echo $echoStr;
            exit;
        }
    }
    //响应消息
    public function responseMsg()
    {
        $timestamp  = $_GET['timestamp'];
        $nonce = $_GET["nonce"];
        $msg_signature  = $_GET['msg_signature'];
        $encrypt_type = (isset($_GET['encrypt_type']) && ($_GET['encrypt_type'] == 'aes')) ? "aes" : "raw";
        
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
        if (!empty($postStr)){
            //解密
            if ($encrypt_type == 'aes'){
                $pc = new WXBizMsgCrypt(TOKEN, EncodingAESKey, AppID);                
                $this->logger(" D \r\n".$postStr);
                $decryptMsg = "";  //解密后的明文
                $errCode = $pc->DecryptMsg($msg_signature, $timestamp, $nonce, $postStr, $decryptMsg);
                $postStr = $decryptMsg;
            }
            $this->logger(" R \r\n".$postStr);
            $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
            $RX_TYPE = trim($postObj->MsgType);
             //消息类型分离
            switch ($RX_TYPE)
            {
                case "event":
                    $result = $this->receiveEvent($postObj);
                    break;
                case "text":
                    $result = $this->receiveText($postObj);
                    break;
            }
            $this->logger(" R \r\n".$result);
            //加密
            if ($encrypt_type == 'aes'){
                $encryptMsg = ''; //加密后的密文
                $errCode = $pc->encryptMsg($result, $timeStamp, $nonce, $encryptMsg);
                $result = $encryptMsg;
                $this->logger(" E \r\n".$result);
            }
            echo $result;
        }else {
            echo "";
            exit;
        }
    }
    //接收事件消息
    private function receiveEvent($object)
    {
        $content = "";
        switch ($object->Event)
        {
            case "subscribe":
                $content = "欢迎关注椰子园，官网http://www.yeziyuan.com ";
                break;
        }
        $result = $this->transmitText($object, $content);
        return $result;
    }
  
    //接收文本消息
    private function receiveText($object)
    {
        $keyword = trim($object->Content);
        if (strstr($keyword, "文本")){
            $content = "这是个文本消息";
        }else if (strstr($keyword, "单图文")){
            $content = array();
            $content[] = array("Title"=>"单图文标题",  "Description"=>"单图文内容", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
        }else if (strstr($keyword, "图文") || strstr($keyword, "多图文")){
            $content = array();
            $content[] = array("Title"=>"多图文1标题", "Description"=>"", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
            $content[] = array("Title"=>"多图文2标题", "Description"=>"", "PicUrl"=>"http://d.hiphotos.bdimg.com/wisegame/pic/item/f3529822720e0cf3ac9f1ada0846f21fbe09aaa3.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
            $content[] = array("Title"=>"多图文3标题", "Description"=>"", "PicUrl"=>"http://g.hiphotos.bdimg.com/wisegame/pic/item/18cb0a46f21fbe090d338acc6a600c338644adfd.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
        }else if (strstr($keyword, "音乐")){
            $content = array();
            $content = array("Title"=>"最炫民族风", "Description"=>"歌手：凤凰传奇", "MusicUrl"=>"http://121.199.4.61/music/zxmzf.mp3", "HQMusicUrl"=>"http://121.199.4.61/music/zxmzf.mp3");
        }else{
            $content = date("Y-m-d H:i:s",time())."\n".$object->FromUserName."\n技术支持 椰子园";
        }

        if(is_array($content)){
            if (isset($content[0])){
                $result = $this->transmitNews($object, $content);
            }else if (isset($content['MusicUrl'])){
                $result = $this->transmitMusic($object, $content);
            }
        }else{
            $result = $this->transmitText($object, $content);
        }
		$content = "本服务号暂未开发，目前仅供活动测试用，感谢您长期以来对椰子园的支持。";
		$result = $this->transmitText($object, $content);
        return $result;
    }
 
    //回复文本消息
    private function transmitText($object, $content)
    {
        $xmlTpl = "<xml>
	    <ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
        <CreateTime>%s</CreateTime>
        <MsgType><![CDATA[text]]></MsgType>
        <Content><![CDATA[%s]]></Content>
        </xml>";
        $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time(), $content);
        return $result;
    }
 
    //回复图文消息
    private function transmitNews($object, $newsArray)
    {
        if(!is_array($newsArray)){
            return;
        }
        $itemTpl = "        <item>
            <Title><![CDATA[%s]]></Title>
            <Description><![CDATA[%s]]></Description>
            <PicUrl><![CDATA[%s]]></PicUrl>
            <Url><![CDATA[%s]]></Url>
        </item>";
        $item_str = "";
        foreach ($newsArray as $item){
            $item_str .= sprintf($itemTpl, $item['Title'], $item['Description'], $item['PicUrl'], $item['Url']);
        }
        $xmlTpl = "<xml>
		<ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
        <CreateTime>%s</CreateTime>
        <MsgType><![CDATA[news]]></MsgType>
        <ArticleCount>%s</ArticleCount>
        <Articles>$item_str</Articles>
		</xml>";

        $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time(), count($newsArray));
        return $result;
    }

    //回复音乐消息
    private function transmitMusic($object, $musicArray)
    {
        $itemTpl = "<Music>
        <Title><![CDATA[%s]]></Title>
        <Description><![CDATA[%s]]></Description>
        <MusicUrl><![CDATA[%s]]></MusicUrl>
        <HQMusicUrl><![CDATA[%s]]></HQMusicUrl>
	    </Music>";

        $item_str = sprintf($itemTpl, $musicArray['Title'], $musicArray['Description'], $musicArray['MusicUrl'], $musicArray['HQMusicUrl']);
 
        $xmlTpl = "<xml>
        <ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
        <CreateTime>%s</CreateTime>
        <MsgType><![CDATA[music]]></MsgType>
        $item_str
    </xml>";

         $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
         return $result;
    }

    //日志记录
    public function logger($log_content)
    {
        if(isset($_SERVER['HTTP_APPNAME'])){   //SAE
            sae_set_display_errors(false);
            sae_debug($log_content);
            sae_set_display_errors(true);
        }else if($_SERVER['REMOTE_ADDR'] != "127.0.0.1"){ //LOCAL
            $max_size = 500000;
            $log_filename = "log.xml";
            if(file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)){unlink($log_filename);}
            file_put_contents($log_filename, date('Y-m-d H:i:s').$log_content."\r\n", FILE_APPEND);
        }
    }
}
?>