基于thinkPHP3.2实现微信接入及查询token值的方法

<?php/** * 微信父类控制器 * @author Songle * */namespace Weixin/Controller;use Think/Controller;class WeixinController extends Controller {  private $last_time=null;  private $appid=null;  private $appsecret=null;  function __construct(){    parent::__construct();    $token=C('TOKEN');    $this->appid=C('APPID');    $this->appsecret=C('APPSECRET');    //获取微信服务器GET请求的4个参数    $signature = I('signature');    $timestamp = I('timestamp');    $nonce = I('nonce');    $echostr = I('echostr');    if (! empty ( $echostr) && ! empty ( $signature ) && ! empty ($nonce )) {      //定义一个数组，存储其中3个参数，分别是timestamp，nonce和token      $tempArr = array($nonce,$timestamp,$token);      //进行排序      sort($tempArr,SORT_STRING);      //将数组转换成字符串      $tmpStr = implode($tempArr);      //进行sha1加密算法      $tmpStr = sha1($tmpStr);      //判断请求是否来自微信服务器，对比$tmpStr和$signature      if($tmpStr == $signature)      {        echo $echostr;      }      exit();    }  }  /**   * 获取tooken值   */  public function getTooken(){    $this->last_time = 1448012924;    $access_token = "填写上一次的token值"; //需要替换成自己的    if(time() > ($this->last_time + 7200))    {      //GET请求的地址      $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$this->appid}&secret={$this->appsecret}";      $access_token_Arr = $this->https_request($url);      $this->last_time = time();      return $access_token_Arr['access_token'];    }    return $access_token;  }  //https请求（支持GET和POST）  public function https_request($url,$data = null)  {    $ch = curl_init();    curl_setopt($ch,CURLOPT_URL,$url);    curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);    if(!empty($data))    {      curl_setopt($ch,CURLOPT_POST,1); //模拟POST      curl_setopt($ch,CURLOPT_POSTFIELDS,$data); //POST内容    }    $outopt = curl_exec($ch);    curl_close($ch);    $outopt = json_decode($outopt,true);    return $outopt;  }}