<?php
/**
 * wechat php test
 */
//调用mecache
$mc=memcache_init();
//接受消息，直接用微信官方的示例代码
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
   if (!empty($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>";
   //定义变量last_step，记录上一次动作
   $last_step=$mc->get($fromUsername."step");
   //定义变量last_data，记录上一次数据
   $last_data=$mc->get($fromUsername."data");
   if(!empty( $keyword )){
    //判断用户动作
     if($last_step!=1){
     //将用户输入的数据保存至memcache
     $mc->set($fromUsername."data",$keyword,0,120);
     //记录用户这一次动作，值设为1
     $mc->set($fromUsername."step",1,0,120);
     $msgType = "text";
     $contentStr = "请再输入一个值：";
     $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
    echo $resultStr;
    } else {
    //清空memcach动作
    $mc->delete($fromUsername."step");
    //清空memcach数据
    $mc->delete($fromUsername."data");
    $msgType = "text";
    $contentStr = "你输入的第一个值为：".$last_data."\n 第二个值为：".$keyword;
    $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
    echo $resultStr;
    }
   }
  } else {
    echo "";
  }
?>