微信公衆號（八）——關注時自動回覆（文字 圖片）

 微信監聽到事件後回調到到我們公衆號配置好的接口地址

/**
     * 配置Token！！！
     */
    public function home(){
        $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);
        $echoStr = $_GET["echostr"];
        if ($tmpStr == $signature) {
            $this->responseMsg();           
        } else {				
            header('content-type:text');
            ob_clean();
            echo $echoStr;
        }
		exit();        
    }	

首次關注

 /**
     * 發送消息
     */
	 public function responseMsg(){
        $data = file_get_contents("php://input");
        $this->res = (array)simplexml_load_string($data, "SimpleXMLElement", LIBXML_NOCDATA);
	//判斷是否首次關注
        if ($this->res['MsgType'] == 'event') {//事件
            if ($this->res['Event'] == 'subscribe') {//關注
                $this->sendText();
            }
            if ($this->res['Event'] == 'unsubscribe') {
                echo "取消關注";
                die;
            }
            if ($this->res['Event'] == 'CLICK') {//點擊事件
                if ($this->res['EventKey'] == 'TO_IMG') {//圖片
                    $this->sendImg("6LGwaGlcL1nEFVNHiWH2YQv4ztDUvsq-7WTAhvUkRU4");
                }
            }      
        }
    }
	 

回覆關注文字消息：

/**
     * 發送關注消息
     * @param $content
     */
    public function sendText($content){
        echo "<xml>
            <ToUserName><![CDATA[".$this->res['FromUserName']."]]></ToUserName>
            <FromUserName><![CDATA[".$this->res['ToUserName']."]]></FromUserName>
            <CreateTime>".time()."</CreateTime>
            <MsgType><![CDATA[text]]></MsgType>
            <Content><![CDATA[".$content."]]></Content>
            </xml>";
    }

回覆圖片消息：（永久）參考：微信公衆號（四）——上傳永久素材（圖片）

/**
     * 回覆圖片
     * @param $content
     */

    public function sendImg($content){
        echo "<xml>
		  <ToUserName><![CDATA[".$this->res['FromUserName']."]]></ToUserName>
		  <FromUserName><![CDATA[".$this->res['ToUserName']."]]></FromUserName>
		  <CreateTime>".time()."</CreateTime>
		  <MsgType><![CDATA[image]]></MsgType>
		  <Image>
			<MediaId><![CDATA[".$content."]]></MediaId>
		  </Image>
		</xml>";
    }