PHP wechat official account development

Calling interface of official account

	/* official account */
	public function check_server()
	{
       
		// Verify the server address URL  If you need to verify for the first time 
		if (isset($_GET['echostr'])) {
    
			$this->valid();
		} else {
    
			// Official operation of official account 
			$this->responseMsg();
			$this->setMenu();
		}
	}

One 、 Verify official account for the first time

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

	// attestation 
	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;
		}
	}

Two 、 Official account operation

	// Official account automatically replies to messages and pays attention to reply messages 
    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);
            //$file = fopen("/var/www/html/ecshop/api/app/ceshi.log", "a+");// Create a file or open a file 
            // fwrite($file, ' Type of reception ' . '----'.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; // Message type 
            $event = $postObj->Event; // Time type ,subscribe（ subscribe ）、unsubscribe（ Unsubscribe ）
            $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>";
            $contentStr = " Default reply text ";
            switch ($msgType) {
    
                case "event":
                    if ($event == "subscribe") {
    
                        $contentStr = '<a data-miniprogram-appid=" Applet appid" data-miniprogram-path=" Applet path " data-miniprogram-nickname=" The name of the applet is not required " data-miniprogram-type="text" href=""> Users pay attention to the information returned by official account </a>';
                    }
                    break;
                case "text":
                    if (strpos($keyword, ' refund ') !== false || strpos($keyword, ' Refund ') !== false) {
    
                        $contentStr = ' The corresponding text is detected and returned ';
                        // $again = true;
                    } elseif (strpos($keyword, ' Customer service ') !== false || strpos($keyword, ' complaints ') !== false || strpos($keyword, ' Order ') !== false) {
    
                        $contentStr = ' The corresponding text is detected and returned ';
                    }
                    break;
            }

            if ($event == "CLICK" && $postObj->EventKey == "business_cooperation") {
    
                $contentStr = ' Click Customize menu to return ';
            }
            $msgType = "text";
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            echo $resultStr;
        } else {
    
            echo "";
            exit;
        }
    }
   	// Set up custom menus 
	private function setMenu()
	{
    
		$url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=" . $this->getToken();

		$data = '{ "button":[ { "type":"miniprogram", // Jump applet  "name":" Menu name 1", "url":" Alternate address ", "appid":" Applet appid", "pagepath":" Applet page address " }, { "type":"miniprogram", // Jump applet  "name":" Menu name 2", "url":" Alternate address ", "appid":" Applet appid", "pagepath":" Applet page address " }, { "type":"click", // Click reply  "name":" Menu name 3", "key":"business_cooperation" // Received when replying to the message KEY Customize  } ] }';
		$resArr = $this->httpRequest($url, $data);
		var_dump($resArr);
	}
// obtain 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 $access_token;
	}
// Request an excuse 
	private function httpGet($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)
	{
    
		$ch = curl_init();
		//3. Set parameters 
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // Skip Certificate Validation 
		curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);  //  Check... From the certificate SSL Whether the encryption algorithm exists 
		//4. Call interface 
		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. close curl
		curl_close($ch);
		return $resArr;
	}

						   Official account technology talk