php 微信公众平台开发模式实现多客服的实例代码

其实微信公众平台的多客服功能已经出来好久了，并且一出来的时候我就已经为自己的公众号实现了，原本以为大家都已经会了，但是今天还是有人问起这个多客服功能怎么使用，我找了下网上也没什么好的教程，今天我就给大家发一篇比较简单易懂的教程吧

在这篇微信公众平台开发教程中，我们将介绍如何使用开发模式实现多客服系统。

一、回复多客服消息

在新的微信协议中，开发模式也可以接入客服系统。 开发者如果需要让用户使用客服系统，需要在接收到用户发送的消息时，返回一个MsgType为transfer_customer_service的消息，微信服务器在收到这条消息时，会把用户这次发送的和以后一段时间内发送的消息转发客服系统。

返回的消息举例如下

<xml> <ToUserName><![CDATA[touser]]></ToUserName> <FromUserName><![CDATA[fromuser]]></FromUserName> <CreateTime>1399197672</CreateTime> <MsgType><![CDATA[transfer_customer_service]]></MsgType></xml>

该消息的实现如下（以方倍工作室的微信公众平台PHP SDK为基础）

//回复多客服消息 private function transmitService($object) {  $xmlTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[transfer_customer_service]]></MsgType></xml>";  $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());  return $result; }

 二、触发多客服会话

一般情况下，用户想要咨询问题是，经常会问“你好”，“在吗”，这样的问题。

我们以这些词为触发关键词，当用户发送的文本消息内容中包含这些词的时候，就返回多客服消息给用户（用户在微信端感觉不到任何内容，但微信公众账号会将用户本次及以后一段时间的消息都转发到客服）。

实现代码如下：

//接收文本消息 private function receiveText($object) {  $keyword = trim($object->Content);  if (strstr($keyword, "投诉") || strstr($keyword, "你好") || strstr($keyword, "在吗")){   $result = $this->transmitService($object);  }  return $result; }

 三、完整代码

<?php/* 方倍工作室 CopyRight 2014 All Rights Reserved*/define("TOKEN", "weixin");$wechatObj = new wechatCallbackapiTest();if (!isset($_GET['echostr'])) { $wechatObj->responseMsg();}else{ $wechatObj->valid();}class wechatCallbackapiTest{ //验证消息 public function valid() {  $echoStr = $_GET["echostr"];  if($this->checkSignature()){   echo $echoStr;   exit;  } } //检查签名 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;  } } //响应消息 public function responseMsg() {  $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];  if (!empty($postStr)){   $this->logger("R ".$postStr);   $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);   $RX_TYPE = trim($postObj->MsgType);   switch ($RX_TYPE)   {    case "event":     $result = $this->receiveEvent($postObj);     break;    case "text":     $result = $this->receiveText($postObj);     break;   }   $this->logger("T ".$result);   echo $result;  }else {   echo "";   exit;  } } //接收事件消息 private function receiveEvent($object) {  switch ($object->Event)  {   case "subscribe":    $content[] = array("Title" =>"欢迎关注方倍工作室", "Description" =>"使用方法：/n1.发送快递单号,例如6367532560,可查询快递详情", "PicUrl" =>"http://www.3856.cc/weixin/weixin/logo.jpg", "Url" =>"");    break;   default:    $content = "receive a new event: ".$object->Event;    break;  }  if(is_array($content)){   if (isset($content[0])){    $result = $this->transmitNews($object, $content);   }else if (isset($content['MusicUrl'])){    $result = $this->transmitMusic($object, $content);   }  }else{   $result = $this->transmitText($object, $content);  }  return $result; } //接收文本消息 private function receiveText($object) {  $keyword = trim($object->Content);  if($keyword == "时间" || $keyword == "测试"){   $content = date("Y-m-d H:i:s",time());   $result = $this->transmitText($object, $content);  }  //触发多客服模式  else if (strstr($keyword, "您好") || strstr($keyword, "你好") || strstr($keyword, "在吗") || strstr($keyword, "有人吗")){   $result = $this->transmitService($object);   return $result;  }  return $result; } private function transmitText($object, $content) {  $textTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[%s]]></Content></xml>";  $result = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content);  return $result; } private function transmitNews($object, $newsArray) {  if(!is_array($newsArray)){   return;  }  $itemTpl = " <item>  <Title><![CDATA[%s]]></Title>  <Description><![CDATA[%s]]></Description>  <PicUrl><![CDATA[%s]]></PicUrl>  <Url><![CDATA[%s]]></Url> </item>";  $item_str = "";  foreach ($newsArray as $item){   $item_str .= sprintf($itemTpl, $item['Title'], $item['Description'], $item['PicUrl'], $item['Url']);  }  $newsTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[news]]></MsgType><Content><![CDATA[]]></Content><ArticleCount>%s</ArticleCount><Articles>$item_str</Articles></xml>";  $result = sprintf($newsTpl, $object->FromUserName, $object->ToUserName, time(), count($newsArray));  return $result; } private function transmitMusic($object, $musicArray) {  $itemTpl = "<Music> <Title><![CDATA[%s]]></Title> <Description><![CDATA[%s]]></Description> <MusicUrl><![CDATA[%s]]></MusicUrl> <HQMusicUrl><![CDATA[%s]]></HQMusicUrl></Music>";  $item_str = sprintf($itemTpl, $musicArray['Title'], $musicArray['Description'], $musicArray['MusicUrl'], $musicArray['HQMusicUrl']);  $textTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[music]]></MsgType>$item_str</xml>";  $result = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time());  return $result; } //回复多客服消息 private function transmitService($object) {  $xmlTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[transfer_customer_service]]></MsgType></xml>";  $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());  return $result; } private function logger($log_content) {  if(isset($_SERVER['HTTP_APPNAME'])){ //SAE   sae_set_display_errors(false);   sae_debug($log_content);   sae_set_display_errors(true);  }else if($_SERVER['REMOTE_ADDR'] != "127.0.0.1"){ //LOCAL   $max_size = 10000;   $log_filename = "log.xml";   if(file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)){unlink($log_filename);}   file_put_contents($log_filename, date('H:i:s')." ".$log_content."/r/n", FILE_APPEND);  } }}?>