参考文件
1、wx_sample.php初始代码
此代码用于验证公众号开发者模式的服务器配置
<?php
/**
* wechat php test
*/
//define your token
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
$wechatObj->valid();
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)){
/* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection,
the best way is to check the validity of xml by yourself */
libxml_disable_entity_loader(true);
$postObj = simplexml_load_string($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[%s]]></MsgType>
<Content><![CDATA[%s]]></Content>
<FuncFlag>0</FuncFlag>
</xml>";
if(!empty( $keyword ))
{
$msgType = "text";
$contentStr = "Welcome to wechat world!";
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
echo $resultStr;
}else{
echo "Input something...";
}
}else{
echo "";
exit;
}
}
private function checkSignature()
{
// you must define TOKEN by yourself
if (!defined("TOKEN")) {
throw new Exception('TOKEN is not defined!');
}
$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
$token = TOKEN;
$tmpArr = array($token, $timestamp, $nonce);
// use SORT_STRING rule
sort($tmpArr, SORT_STRING);
$tmpStr = implode( $tmpArr );
$tmpStr = sha1( $tmpStr );
if( $tmpStr == $signature ){
return true;
}else{
return false;
}
}
}
?>
2、启用调用回复信息(带注释)
在wx_sample.php
文件中注释掉$wechatObj->valid();
,在其下增加一句$wechatObj->responseMsg();
。
<?php
//定义TOKEN密钥
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
//接口验证(验证成功后关闭
//$wechatObj->valid();
//开启自动回复
$wechatObj->responseMsg();
class wechatCallbackapiTest
{
public function valid()
{
//接收随机字符串
$echoStr = $_GET["echostr"];
//进行用户数字签名验证
if($this->checkSignature()){
//如果成功,则返回接受到的随机字符串
echo $echoStr;
exit;
}
}
//定义用户数字签名验证功能
private function checkSignature()
{
//判断TOKEN密钥是否定义
if (!defined("TOKEN")) {
//如果没有定义,则抛出异常
throw new Exception('TOKEN is not defined!');
}
//接收微信加密签名
$signature = $_GET["signature"];
//接收时间戳
$timestamp = $_GET["timestamp"];
//接收随机数
$nonce = $_GET["nonce"];
//把TOKEN常量赋值给$token变量
$token = TOKEN;
//把相关参数组装为数组(密钥,时间戳,随机数)
$tmpArr = array($token, $timestamp, $nonce);
//通过字典法进行排序
sort($tmpArr, SORT_STRING);
//把排序后的数组转化为字符串
$tmpStr = implode( $tmpArr );
//通过哈希算法进行加密操作
$tmpStr = sha1( $tmpStr );
//与加密签名进行对比
if( $tmpStr == $signature ){
return true;
}else{
return false;
}
}
//定义自动回复功能
public function responseMsg()
{
//接收用户端发送过来的XML数据
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
//判断XML数据是否为空
if (!empty($postStr)){
libxml_disable_entity_loader(true);
//通过simplexml进行xml解析
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
//手机端
$fromUsername = $postObj->FromUserName;
//微信的公众平台
$toUsername = $postObj->ToUserName;
//接收用户发送的关键词
$keyword = trim($postObj->Content);
//时间戳
$time = time();
//文本发送模板
$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>";
//判断用户发送关键词是否为空
if(!empty( $keyword ))
{
//回复类型,如果为"text",代表文本类型
$msgType = "text";
//回复内容
$contentStr = "Welcome to Ricken world!";
//格式化字符串
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
//把XML数据返回手机端
echo $resultStr;
}else{
echo "Input something...";
}
}else{
echo "";
exit;
}
}
}
?>
3、关键词自动回复和关注回复
$keyword保存着用户微信端发来的文本信息。
关注事件与一般的文本消息有两处不同,一是MsgType
值是event
,二是增加了Event
值是subscribe
。由于官方文档(最初的wx_sample.php)没有提取这个参数,需要我们自己提取。在程序中增加两个变量$msgType
和$event
。
<?php
//定义TOKEN密钥
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
//接口验证(验证成功后关闭
//$wechatObj->valid();
//开启自动回复
$wechatObj->responseMsg();
class wechatCallbackapiTest
{
public function valid()
{
//接收随机字符串
$echoStr = $_GET["echostr"];
//进行用户数字签名验证
if($this->checkSignature()){
//如果成功,则返回接受到的随机字符串
echo $echoStr;
exit;
}
}
//定义用户数字签名验证功能
private function checkSignature()
{
//判断TOKEN密钥是否定义
if (!defined("TOKEN")) {
//如果没有定义,则抛出异常
throw new Exception('TOKEN is not defined!');
}
//接收微信加密签名
$signature = $_GET["signature"];
//接收时间戳
$timestamp = $_GET["timestamp"];
//接收随机数
$nonce = $_GET["nonce"];
//把TOKEN常量赋值给$token变量
$token = TOKEN;
//把相关参数组装为数组(密钥,时间戳,随机数)
$tmpArr = array($token, $timestamp, $nonce);
//通过字典法进行排序
sort($tmpArr, SORT_STRING);
//把排序后的数组转化为字符串
$tmpStr = implode( $tmpArr );
//通过哈希算法进行加密操作
$tmpStr = sha1( $tmpStr );
//与加密签名进行对比
if( $tmpStr == $signature ){
return true;
}else{
return false;
}
}
//定义自动回复功能
public function responseMsg()
{
//接收用户端发送过来的XML数据
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
//判断XML数据是否为空
if (!empty($postStr)){
libxml_disable_entity_loader(true);
//通过simplexml进行xml解析
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
//手机端
$fromUsername = $postObj->FromUserName;
//微信的公众平台
$toUsername = $postObj->ToUserName;
//接收用户发送的关键词
$keyword = trim($postObj->Content);
//消息类型
$msgType = $postObj->MsgType;
//时间类型
$event = $postObj->Event;//时间类型,subscribe(订阅)、unsubscribe(取消订阅)
//时间戳
$time = time();
//文本发送模板
$textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[%s]]></MsgType>
<Content><![CDATA[%s]]></Content>
<FuncFlag>0</FuncFlag>
</xml>";
switch($msgType){
case "event":
if($event == "subscribe"){
$contentStr = "谢谢你那么可爱还关注我~~~";
}
case "text":
switch($keyword){
case "小角落":
$contentStr = "<a href=\"https://kk.hackerjk.top\">小角落</a>";
break;
default:
$contentStr = "Welcome to Ricken world!";
}
}
//回复类型,如果为"text",代表文本类型
$msgType = "text";
//格式化字符串
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
//把XML数据返回手机端
echo $resultStr;
}else{
echo "";
exit;
}
}
}
?>