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微信公众平台开发入门教程:第四章 微信公众平台PHP SDK

2014-06-27来源:[www.121ask.com]热度:0℃ 【字体:

微信公众平台开发入门教程:微信公众平台PHP SDK:

在这篇微信公众平台开发教程中,我们假定你已经有了PHP语言程序、MySQL数据库、计算机网络通讯、及HTTP/XML/CSS/JS等基础。
我们将使用微信公众账号方倍工作室作为讲解的例子,二维码见底部。
本系列教程将引导你完成如下任务:
创建新浪云计算平台应用
启用微信公众平台开发模式
基础接口消息及事件
微信公众平台PHP SDK
微信公众平台开发模式原理
开发天气预报功能

第四章 微信公众平台PHP SDK

 

方倍工作室开发了微信公众平台的PHPSDK,集成了目前所有消息及事件的接收及发送,代码如下:

复制代码
<?php
/*
    方倍工作室 
    http://www.cnblogs.com/txw1958/
    CopyRight 2014 All Rights Reserved
*/

define("TOKEN", "weixin");

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

class wechatCallbackapiTest
{
    //验证消息
    public function valid()
    {
        $echoStr = $_GET["echostr"];
        if($this->checkSignature()){
            echo $echoStr;
            exit;
        }
    }

    //检查签名
    private function checkSignature()
    {
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];
        $token = TOKEN;
        $tmpArr = array($token, $timestamp, $nonce);
        sort($tmpArr, SORT_STRING);
        $tmpStr = implode($tmpArr);
        $tmpStr = sha1($tmpStr);

        if($tmpStr == $signature){
            return true;
        }else{
            return false;
        }
    }

    //响应消息
    public function responseMsg()
    {
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
        if (!empty($postStr)){
            $this->logger("R ".$postStr);
            $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
            $RX_TYPE = trim($postObj->MsgType);

            switch ($RX_TYPE)
            {
                case "event":
                    $result = $this->receiveEvent($postObj);
                    break;
                case "text":
                    $result = $this->receiveText($postObj);
                    break;
                case "image":
                    $result = $this->receiveImage($postObj);
                    break;
                case "location":
                    $result = $this->receiveLocation($postObj);
                    break;
                case "voice":
                    $result = $this->receiveVoice($postObj);
                    break;
                case "video":
                    $result = $this->receiveVideo($postObj);
                    break;
                case "link":
                    $result = $this->receiveLink($postObj);
                    break;
                default:
                    $result = "unknown msg type: ".$RX_TYPE;
                    break;
            }
            $this->logger("T ".$result);
            echo $result;
        }else {
            echo "";
            exit;
        }
    }

    //接收事件消息
    private function receiveEvent($object)
    {
        $content = "";
        switch ($object->Event)
        {
            case "subscribe":
                $content = "欢迎关注方倍工作室 ";
                $content .= (!empty($object->EventKey))?("\n来自二维码场景 ".str_replace("qrscene_","",$object->EventKey)):"";
                break;
            case "unsubscribe":
                $content = "取消关注";
                break;
            case "SCAN":
                $content = "扫描场景 ".$object->EventKey;
                break;
            case "CLICK":
                switch ($object->EventKey)
                {
                    case "COMPANY":
                        $content = "方倍工作室提供互联网相关产品与服务。";
                        break;
                    default:
                        $content = "点击菜单:".$object->EventKey;
                        break;
                }
                break;
            case "LOCATION":
                $content = "上传位置:纬度 ".$object->Latitude.";经度 ".$object->Longitude;
                break;
            case "VIEW":
                $content = "跳转链接 ".$object->EventKey;
                break;
            default:
                $content = "receive a new event: ".$object->Event;
                break;
        }
        $result = $this->transmitText($object, $content);
        return $result;
    }

    //接收文本消息
    private function receiveText($object)
    {
        switch ($object->Content)
        {
            case "文本":
                $content = "这是个文本消息";
                break;
            case "图文":
            case "单图文":
                $content = array();
                $content[] = array("Title"=>"单图文标题",  "Description"=>"单图文内容", "PicUrl"=>"http://www.121ask.com/UploadFiles/2014-06/2/20146273878160933.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
                break;
            case "多图文":
                $content = array();
                $content[] = array("Title"=>"多图文1标题", "Description"=>"", "PicUrl"=>"http://www.121ask.com/UploadFiles/2014-06/2/20146273878160933.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
                $content[] = array("Title"=>"多图文2标题", "Description"=>"", "PicUrl"=>"http://www.121ask.com/UploadFiles/2014-06/2/20146275025794235.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
                $content[] = array("Title"=>"多图文3标题", "Description"=>"", "PicUrl"=>"http://www.121ask.com/UploadFiles/2014-06/2/20146272740230696.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
                break;
            case "音乐":
                $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");
                break;
            default:
                $content = date("Y-m-d H:i:s",time());
                break;
        }
        if(is_array($content)){
            if (isset($content[0]['PicUrl'])){
                $result = $this->transmitNews($object, $content);
            }else if (isset($content['MusicUrl'])){
                $result = $this->transmitMusic($object, $content);
            }
        }else{
            $result = $this->transmitText($object, $content);
        }
        return $result;
    }

    //接收图片消息
    private function receiveImage($object)
    {
        $content = array("MediaId"=>$object->MediaId);
        $result = $this->transmitImage($object, $content);
        return $result;
    }

    //接收位置消息
    private function receiveLocation($object)
    {
        $content = "你发送的是位置,纬度为:".$object->Location_X.";经度为:".$object->Location_Y.";缩放级别为:".$object->Scale.";位置为:".$object->Label;
        $result = $this->transmitText($object, $content);
        return $result;
    }

    //接收语音消息
    private function receiveVoice($object)
    {
        if (isset($object->Recognition) && !empty($object->Recognition)){
            $content = "你刚才说的是:".$object->Recognition;
            $result = $this->transmitText($object, $content);
        }else{
            $content = array("MediaId"=>$object->MediaId);
            $result = $this->transmitVoice($object, $content);
        }

        return $result;
    }

    //接收视频消息
    private function receiveVideo($object)
    {
        $content = array("MediaId"=>$object->MediaId, "ThumbMediaId"=>$object->ThumbMediaId, "Title"=>"", "Description"=>"");
        $result = $this->transmitVideo($object, $content);
        return $result;
    }

    //接收链接消息
    private function receiveLink($object)
    {
        $content = "你发送的是链接,标题为:".$object->Title.";内容为:".$object->Description.";链接地址为:".$object->Url;
        $result = $this->transmitText($object, $content);
        return $result;
    }

    //回复文本消息
    private function transmitText($object, $content)
    {
        $textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[%s]]></Content>
</xml>";
        $result = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content);
        return $result;
    }

    //回复图片消息
    private function transmitImage($object, $imageArray)
    {
        $itemTpl = "<Image>
    <MediaId><![CDATA[%s]]></MediaId>
</Image>";

        $item_str = sprintf($itemTpl, $imageArray['MediaId']);

        $textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[image]]></MsgType>
$item_str
</xml>";

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

    //回复语音消息
    private function transmitVoice($object, $voiceArray)
    {
        $itemTpl = "<Voice>
    <MediaId><![CDATA[%s]]></MediaId>
</Voice>";

        $item_str = sprintf($itemTpl, $voiceArray['MediaId']);

        $textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[voice]]></MsgType>
$item_str
</xml>";

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

    //回复视频消息
    private function transmitVideo($object, $videoArray)
    {
        $itemTpl = "<Video>
    <MediaId><![CDATA[%s]]></MediaId>
    <ThumbMediaId><![CDATA[%s]]></ThumbMediaId>
    <Title><![CDATA[%s]]></Title>
    <Description><![CDATA[%s]]></Description>
</Video>";

        $item_str = sprintf($itemTpl, $videoArray['MediaId'], $videoArray['ThumbMediaId'], $videoArray['Title'], $videoArray['Description']);

        $textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[video]]></MsgType>
$item_str
</xml>";

        $result = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time());
        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']);
        }
        $newsTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[news]]></MsgType>
<Content><![CDATA[]]></Content>
<ArticleCount>%s</ArticleCount>
<Articles>
$item_str</Articles>
</xml>";

        $result = sprintf($newsTpl, $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']);

        $textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[music]]></MsgType>
$item_str
</xml>";

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

    //日志记录
    private 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 = 10000;
            $log_filename = "log.xml";
            if(file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)){unlink($log_filename);}
            file_put_contents($log_filename, date('H:i:s')." ".$log_content."\r\n", FILE_APPEND);
        }
    }
}
?>
复制代码

使用第一章同样方法,将上述代码另存为index.php,压缩成index.zip,或者直接点击下载,上传到SAE,你的公众账号就能接收及回复所有消息类型及事件通知了。

在公众账号中回复以下文字,你将得到和上一章一样的回复内容。

文本
图文
多图文
音乐
时间

还可以尝试以下操作,体验一下其他消息

发送一张图片给公众账号
发送一段语音给公众账号
发送一段视频给公众账号
发送位置信息给公众账号
发送收藏中的链接给公众账号

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