xiaoben-as2-php/protected/extensions/weixin/wechataccesstoken.php

<?php
/**
 * Created by 上海风车教育科技有限公司.
 * User: 刘红伟
 * Date: 15-11-24
 * Email: 454303753@qq.com
 * File:wechataccesstoken.php
 */

class wechataccesstoken{
    private  $appid;
    private  $secret;
    private $_errorno;
    private $_error;
    public function __construct($appid,$secret)
    {
        $this->appid=$appid;
        $this->secret=$secret;
    }

    public function get(){
    $url="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$this->appid."&secret=".$this->secret;

    $http= wx_http::factory($url,wx_http::TYPE_CURL);
    $json= $http->get();
    $result=json_decode($json,true);

     if(isset($result['errcode'])){
        $this->_errorno=$result['errcode'];
        $this->_error=$result['errmsg'];
         return false;
     }
    if(isset($result['access_token'])){
        return $result;
    }
    }
    public function getErrno()
    {
        return $this->_errno;
    }

    public function getError()
    {
        return $this->_error;
    }
}