[PHP知识库]PHP微信公众号开发

公众号调用接口

	/*公众号*/
	public function check_server()
	{   
		//校验服务器地址URL 如果第一次需要验证
		if (isset($_GET['echostr'])) {
			$this->valid();
		} else {
			//公众号正式操作
			$this->responseMsg();
			$this->setMenu();
		}
	}

一、第一次验证公众号

	//验证
	private function valid()
	{
		$echoStr = $_GET["echostr"];
		if ($this->checkSignature()) {
			header('content-type:text');
			echo $echoStr;
			exit;
		} else {
			echo $echoStr . '+++' . WXTOKEN;
			exit;
		}
	}

	//验签
	private function checkSignature()
	{
		$signature = $_GET["signature"];
		$timestamp = $_GET["timestamp"];
		$nonce = $_GET["nonce"];

		$token = WXTOKEN;
		$tmpArr = array($token, $timestamp, $nonce);
		sort($tmpArr, SORT_STRING);
		$tmpStr = implode($tmpArr);
		$tmpStr = sha1($tmpStr);

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

二、公众号相关操作

	//公众号自动回复消息和关注回复消息
    public function responseMsg()
    {
        //file_get_contents()
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
        //extract post data
        if (!empty($postStr)) {
            libxml_disable_entity_loader(true);
            $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
            //$file = fopen("/var/www/html/ecshop/api/app/ceshi.log", "a+");//创建文件或打开文件
            // fwrite($file, '接收类型' . '----'.json_encode($postObj).'-------------------' . date('Y-m-d H:i:s', time()) . "\r\n");
            $fromUsername = $postObj->FromUserName;
            $toUsername = $postObj->ToUserName;
            $keyword = trim($postObj->Content);
            $time = time();
            $msgType = $postObj->MsgType; //消息类型
            $event = $postObj->Event; //时间类型，subscribe（订阅）、unsubscribe（取消订阅）
            $textTpl = "<xml>
  <ToUserName><![CDATA[%s]]></ToUserName>
  <FromUserName><![CDATA[%s]]></FromUserName>
  <CreateTime>%s</CreateTime>
  <MsgType><![CDATA[%s]]></MsgType>
  <Content><![CDATA[%s]]></Content>
  <FuncFlag>0</FuncFlag>
  </xml>";
            $contentStr = "默认回复的文本";
            switch ($msgType) {
                case "event":
                    if ($event == "subscribe") {
                        $contentStr = '<a data-miniprogram-appid="小程序appid" data-miniprogram-path="小程序路径" data-miniprogram-nickname="小程序名可不填" data-miniprogram-type="text" href="">用户关注公众号返回信息</a>';
                    }
                    break;
                case "text":
                    if (strpos($keyword, '退款') !== false || strpos($keyword, '退钱') !== false) {
                        $contentStr = '检测到对应文本返回';
                        // $again = true;
                    } elseif (strpos($keyword, '客服') !== false || strpos($keyword, '投诉') !== false || strpos($keyword, '订单') !== false) {
                        $contentStr = '检测到对应文本返回';
                    }
                    break;
            }

            if ($event == "CLICK" && $postObj->EventKey == "business_cooperation") {
                $contentStr = '点击自定义菜单返回';
            }
            $msgType = "text";
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            echo $resultStr;
        } else {
            echo "";
            exit;
        }
    }
   	//设置自定义菜单
	private function setMenu()
	{
		$url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=" . $this->getToken();

		$data = '{
			"button":[
				{
					"type":"miniprogram", //跳转小程序
					"name":"菜单名1",
					"url":"备用地址",
					"appid":"小程序appid",
					"pagepath":"小程序页面地址"
				},
				{
					"type":"miniprogram", //跳转小程序
					"name":"菜单名2",
					"url":"备用地址",
					"appid":"小程序appid",
					"pagepath":"小程序页面地址"
				},
				{
					"type":"click",  //点击回复
					"name":"菜单名3",
					"key":"business_cooperation" //回复消息时接收的KEY自定义
				}
			]
		}';
		$resArr = $this->httpRequest($url, $data);
		var_dump($resArr);
	}
//获取token
public function getToken($type = 0)
	{
		
		$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=appid&secret=appSecret";
		$res = json_decode($this->httpGet($url));
		$access_token = $res->access_token;
		return $access_token;
	}
//请求借口
	private function httpGet($url)
	{
		$curl = curl_init();
		curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($curl, CURLOPT_TIMEOUT, 500);
		curl_setopt($curl, CURLOPT_URL, $url);
		$res = curl_exec($curl);
		curl_close($curl);
		return $res;
	}
	private function httpRequest($url, $data = null)
	{
		$ch = curl_init();
		//3.设置参数
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //跳过证书验证
		curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);  // 从证书中检查SSL加密算法是否存在
		//4.调用接口
		if (!empty($data)) {
			curl_setopt($ch, CURLOPT_POST, 1);
			curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
		}
		$res = curl_exec($ch);
		if (substr($res, 0, 3) == pack("CCC", 0xEF, 0xBB, 0xBF)) $res = substr($res, 3);
		$resArr = json_decode($res, true);
		//5.关闭curl
		curl_close($ch);
		return $resArr;
	}

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