16、微信公眾號關鍵詞自動回復 · php函數類庫整理 by：小灰灰

~~~ <?php // 接收參數 define("TOKEN", "123456"); $wechatObj = new wx(); if (isset($_GET['echostr'])) { $wechatObj->valid(); } else { $wechatObj->responseMsg(); } class wx { /** * 微信公眾號驗證 */ public function valid() { $echoStr = $_GET["echostr"]; if ($this->checkSignature()) { echo $echoStr; exit; } } public function responseMsg() { //$postArr = $GLOBALS['HTTP_RAW_POST_DATA']; $postArr = file_get_contents('php://input'); //2.處理消息類型，并設置回復類型和內容 $postObj = simplexml_load_string($postArr); //判斷該數據包是否是訂閱的事件推送 if (strtolower($postObj->MsgType) == 'event') { //如果是關注 subscribe 事件 // 超鏈接里邊指定data-miniprogram-path跳轉小程序某個頁面 if (strtolower($postObj->Event == 'subscribe')) { //回復用戶消息(純文本格式) $fromUsername = $postObj->FromUserName; //請求消息的用戶 $toUsername = $postObj->ToUserName; //"我"的公眾號id $time = time(); //時間戳 $msgtype = 'text'; //消息類型：文本 $textTpl = "<xml> <ToUserName><![CDATA[%s]]></ToUserName> <FromUserName><![CDATA[%s]]></FromUserName> <CreateTime>%s</CreateTime> <MsgType><![CDATA[%s]]></MsgType> <Content><![CDATA[%s]]></Content> </xml>"; if (strtolower($postObj->MsgType == 'event')) { //如果XML信息里消息類型為event if ($postObj->Event == 'subscribe') { //如果是訂閱事件 $followMeText = "關注后自動回復的語句"; if (empty($followMeText)) { $followMeText = "嘻嘻，最近小編花了好大時間做了這個自動回復功能！現在可以直接回復關鍵詞就ok拉！"; } $contentStrq = $content = $followMeText; $resultStrq = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgtype, $contentStrq); echo $resultStrq; exit();//一定要加！！！！不加程序運轉正常就是不回復消息 } } } } //判斷是否回復關鍵詞 if (strtolower($postObj->MsgType) == 'text') { $keyword = trim($postObj->Content); //消息內容 if ( ! empty($keyword)) { $resContent = keyword; $res = $this->transmitText($postObj, $resContent); echo $res; exit();//一定要加！！！！不加程序運轉正常就是不回復消息 } else { echo ""; exit(); } } } private function transmitText($object, $content) { $xmlTpl = '<xml> <ToUserName><![CDATA[%s]]></ToUserName> <FromUserName><![CDATA[%s]]></FromUserName> <CreateTime>%s</CreateTime> <MsgType><![CDATA[text]]></MsgType> <Content><![CDATA[%s]]></Content> </xml>'; $res = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time(), $content); return $res; } private function checkSignature() { $signature = $_GET["signature"]; $timestamp = $_GET["timestamp"]; $nonce = $_GET["nonce"]; $token = TOKEN; $tmpArr = array($token, $timestamp, $nonce); sort($tmpArr); $tmpStr = implode($tmpArr); $tmpStr = sha1($tmpStr); if ($tmpStr == $signature) { return true; } else { return false; } } } ~~~