微信公众平台自动回复图文消息

最新推荐文章于 2024-07-24 16:34:30 发布

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最新推荐文章于 2024-07-24 16:34:30 发布

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分类专栏： utils 文章标签： php xml 微信公众平台开发

本文链接：https://blog.youkuaiyun.com/williamfan21c/article/details/38173119

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本文详细解析了使用PHP实现微信回调API的方法，包括验证签名、获取请求参数、解析并响应消息等关键步骤。

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<?php
/**
  * wechat php test
  */

//define your token
define("TOKEN", "supernatural");
$wechatObj = new wechatCallbackapiTest();
$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)){
                
              	$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
                $fromUsername = $postObj->FromUserName;
                $toUsername = $postObj->ToUserName;
                $keyword = trim($postObj->Content);
                $time = time();
                $textTpl = "<xml>
                            <ToUserName><![CDATA[%s]]></ToUserName>
							<FromUserName><![CDATA[%s]]></FromUserName>
							<CreateTime>%s</CreateTime>
 <MsgType><![CDATA[news]]></MsgType>
 <ArticleCount>2</ArticleCount>
 <Articles>
 <item>
 <Title><![CDATA[飞哥]]></Title> 
 <Description><![CDATA[ff]]></Description>
 <PicUrl><![CDATA[http://2.png]]></PicUrl>
 <Url><![CDATA[http://blog.youkuaiyun.com/williamfan21c]]></Url>
 </item>
 <item>
 <Title><![CDATA[克迪]]></Title>
 <Description><![CDATA[kk]]></Description>
 <PicUrl><![CDATA[http://1.png]]></PicUrl>
 <Url><![CDATA[http://blog.youkuaiyun.com/williamfan21c]]></Url>
 </item>
 </Articles>
 <FuncFlag>1</FuncFlag>
 </xml> ";             
            if(!empty( $keyword ))//keyword是用户发送来的信息
                {
              		$msgType = "news";
                $contentStr = "you said:".$keyword."\nWelcome to city of WuXi";//返回信息
                	$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
                	echo $resultStr;
                }else{
                	echo "Input something...";
                }

        }else {
        	echo "error";
        	exit;
        }
    }
		
	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;
		}
	}
}

?>