<?php
// +----------------------------------------------------------------------
// | 获取微信公众带参数二维码
// | Author: wzb 312967328@qq.com
// +----------------------------------------------------------------------

namespace Mob\Controller;
use Think\Controller;
class BinController extends Controller{

    private $appId;
    private $appSecret;
    private $type;
//  private $logo_img;
    /**********************
     * 微信获取 access_token
     *********************/
    protected function _initialize($uid=0){
        $config =   api(‘Config/lists‘);
        C($config); //添加配置
        $this->appId = C(‘WX_APPID‘);
        $this->appSecret = C(‘WX_SECRET‘);
        $this->type=0;

        $site_url = ‘./Uploads/images/‘;
        $store_path = date(‘Y‘).‘/‘.date(‘m‘).‘/‘.date(‘d‘) ;       //分目录存放 zkf 2015-7-31
        if(!is_dir($site_url.$store_path)) {
            @mkdir($site_url.$store_path, 0777 , true) ;
        }
        $this->logo_img = $site_url.$store_path.‘/user_uid‘.$uid.‘.png‘;
    }
    /**********************
     * 微信获取 access_token
     *********************/
    private function getAccessToken() {
        $m_appact = M(‘Appact‘,‘ot_‘,DB_GY);
        $data = $m_appact -> where(array(‘appid‘=> $this ->appId)) -> field(‘access_token,expire_time‘) -> find();
        if ($data[‘expire_time‘] < time()) {
            $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
            $res = json_decode($this->httpGet($url));
            $access_token = $res->access_token;
            if ($access_token) {
                $data[‘expire_time‘] = time() + 7000;
                $data[‘access_token‘] = $access_token;
                $r = $m_appact -> where(array(‘appid‘=> $this->appId)) -> find();
                $save_arr = array(‘access_token‘=> $data[‘access_token‘],‘expire_time‘=> $data[‘expire_time‘]);
                $add_arr  = array(‘appid‘=>$this->appId,‘access_token‘=> $data[‘access_token‘],‘expire_time‘=> $data[‘expire_time‘]);
                $r ? $m_appact -> where(array(‘appid‘=> $this->appId)) -> save($save_arr) : $m_appact -> add($add_arr);
            }
        } else {
            $access_token = $data[‘access_token‘];
        }
        return $access_token;
    }


    /**********************
     * 获取微信二维码
     *********************/
    function get_erma(){
        $access_token = $this->getAccessToken();
        if(max(0,$this->$type) == 0){
             //临时
            $qrcode = array(
                        "expire_seconds" => 1800,
                        "action_name" => "QR_SCENE",
                        "action_info" => array(
                            "scene" => array(  "scene_id" => 10000 )
                        )
                    );
        }else{
            //永久
            $qrcode = array(
                    "action_name"=> "QR_LIMIT_SCENE",
                    "action_info" =>array(
                        "scene"=>array( "scene_id"=> 1000 )
                    )
                );
        }

        //创建二维码ticket
        $url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=$access_token";
        $result = $this->https_post($url,json_encode($qrcode));
        $jsoninfo = json_decode($result, true);
        $ticket = $jsoninfo["ticket"];

        // 下载二维码
        $get_img_url = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=".urlencode($ticket);
        $imageInfo = $this->downloadImageFromWeiXin($get_img_url);

        $filename = $this->logo_img;
        $local_file = fopen($filename, ‘w‘);
        if (false !== $local_file){
            if (false !== fwrite($local_file, $imageInfo["body"])) {
                fclose($local_file);
            }
        }
    }
   /**********************
     * 下载图片函数
     *********************/
    function downloadImageFromWeiXin($url){
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_NOBODY, 0);    //只取body头
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $package = curl_exec($ch);
        $httpinfo = curl_getinfo($ch);
        curl_close($ch);
        return array_merge(array(‘body‘ => $package), array(‘header‘ => $httpinfo));
    }

    /**********************
     * POST 数据函数
     *********************/
    function https_post($post_url, $post_data){
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $post_url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($curl, CURLOPT_POST, 1 );
        curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl,CURLOPT_USERAGENT,"Mozilla/4.0");
        $result = curl_exec($curl);
        $error = curl_error($curl);
        curl_close($curl);
        return $error ? $error : $result;
    }
    /**********************
     * GET 数据函数
     *********************/
    private function httpGet($url) {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_TIMEOUT, 500);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl, CURLOPT_URL, $url);

        $res = curl_exec($curl);
        curl_close($curl);

        return $res;
    }

}