一、前提
1、购买一台云服务器
域名解析

这里用的宝塔服务
创建域名 绑定到指定的目录


wx.php 代码如下
<?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)){
$postObj = simplexml_load_string($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()
{
$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;
}
}
}
?>
其中
define("TOKEN", "weixin");
第7行是用户定义的“token”,需要与下面将会提及的令牌(Token)相同。

填写完毕后,提交即可完成服务器配置的启用。
自动回复功能代码如下
<?php
// $wechatObj = new wechat();
// $wechatObj->valid();
class wechat {
public function responseMsg()
{
//get post data, May be due to the different environments
$postStr =file_get_contents('php://input');
//extract post data
if (!empty($postStr)) {
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 = "测试蛋白质维生素和矿物质等及水发酵的作用下对人体产生的作用!";
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
echo $resultStr;
} else {
echo "Input something...";
}
} else {
echo "";
exit;
}
}
}
$wechatObj = new wechat();
$wechatObj->responseMsg();
这只是冰山一角
本文介绍了如何配置云服务器并使用宝塔服务进行域名绑定,以实现微信公众号的自动回复功能。通过创建PHP类`wechatCallbackapiTest`,设置`TOKEN`并验证微信签名,实现了接收并响应用户消息的功能。当接收到用户输入时,程序会返回预设的欢迎语。此配置对于搭建微信公众号的互动平台具有基础指导意义。





