php微信 - 1服务器接入

<?php

  $wechatObj = new wechatCallbackAPI();
  $wechatObj->valid(); 


  class wechatCallbackAPI {

    private $token = "weixin";

    private $appId = "开发者APPID";

    private $appSecret = "APPSECRET";

    private function checkSignature() {
      $signature = $_GET["signature"];
      $timestamp = $_GET["timestamp"];
      $nonce = $_GET["nonce"];  

      $tmpArr = array($this->token, $timestamp, $nonce);
      sort($tmpArr);
      $tmpStr = implode($tmpArr);
      $tmpStr = sha1($tmpStr);

      if($tmpStr == $signature) {
        return true;
      } else {
        return false;
      }
    }

    public function valid() {
      $echoStr = $_GET["echostr"];

      //valid signature, option
      if($this->checkSignature()){
        echo $echoStr;
        exit;
      }
    }
  }
?>

给$token和$appId 赋值后放到服务器中。然后在微信公众平台里填写服务器url点击提交。可能会失败几次，多点几次就好的。