微信公众号基本配置的操作方式及要点

<?php

namespace app\weixin\controller;

use think\Controller;

define("TOKEN", "******");//这里要输入你的token值

// $wechatObj = new wechatCallbackapiTest();

// $wechatObj->valid();

class Wx2 extends Controller {

    public function index() 

    { 

        $echoStr = $_GET["echostr"]; 

        //valid signature , option 

        if($this->checkSignature()){ 

            ob_clean(); //丢弃缓存中的内容

            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,SORT_STRING); 72         $tmpStr = implode( $tmpArr ); 

        $tmpStr = sha1( $tmpStr ); 

        if( $tmpStr == $signature ){ 

            return true; 

        }else{ 

            return false; 

        } 

    }

}