php微信公众号简单回复例子

文章目录[隐藏]

• 前言
• 源码说明
• 源码(没安装代码工具格式有点乱，见谅)
• 截图说明

前言

今天学习了微信公众号开发，学习过程极度曲折，首先是因为大小写问题，一直提示配置出错；然后因为我用方蓓那个微信测试工具，
回复消息一直为空，搞了许久用官方的接口就好了，辛苦抄了一下午的代码终于把回复搞定了，于是想把源码贴出来便于初学者测试用。

源码说明

本源码只有基础的验证配置和简单文字回复功能。

源码(没安装代码工具格式有点乱，见谅)

<?php
    // 接收参数
    define("TOKEN", "test123456");
    $wechatObj = new wechatCallbackapiTest();
    $wechatObj->valid();
 
class wechatCallbackapiTest{
     
    public function valid() {
        $echoStr = $_GET["echostr"];
        //valid signature , option
        if($this->checkSignature()){
            echo $echoStr;
            $this->responseMsg();
            exit;
        }
    }
    
    public 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;
    }
    
     
    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();
            $res = $this->transmitText($postObj, $keyword);
            echo $res;
        }else {
            echo "";
            exit;
        }
    }
     
    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;
        }
    }
}

截图说明