php微信公众号开发之关键词回复

本文实例为大家分享了php微信公众号开发之关键词回复的具体代码，供大家参考，具体内容如下

目标:

• 消息回复
• 关键词回复
• utf8编码

index.php

<?php
/**
 * wechat php test
 */

//define your token
define("token", "jiekou");
$wechatobj = new wechatcallbackapitest();
$wechatobj->responsemsg();

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 ))
        {
          $msgtype = "text";
          switch ($keyword)
          {
          case "1";
          $contentstr = "公司简介!";
          break;
          case "2";
          $contentstr = "最新优惠!";
          break;
          default;
          $contentstr = "欢迎光临!";

          }

          $resultstr = sprintf($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;
    }
  }
}

?>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。