thinkphp 生成二维码 整合phpqrcode 生成二维码

上次发了个调用Google api的生成二维码，如果服务器无法访问网络就无效了。
下面是整合将phpqrcode整合到TP生成二维码就可以解决这个问题了。其实也很简单，使用方法如下:

先下载附件解压至ThinkPHP/Extend/Vendor目录，目录不存在自己创建。

vendor("phpqrcode.phpqrcode");
                $data = 'http://www.baidu.com';
                // 纠错级别：L、M、Q、H
                $level = 'L';
                // 点的大小：1到10,用于手机端4就可以了
                $size = 4;
                // 下面注释了把二维码图片保存到本地的代码,如果要保存图片,用$fileName替换第二个参数false
                //$path = "images/";
                // 生成的文件名
                //$fileName = $path.$size.'.png';
                QRcode::png($data, false, $level, $size);
                 return $fileName  //返回地址

项目运用： 在controller调用

$img = qrcode($url);

公共函数：

/*
 * 生成二维码
 * */
function qrcode($url,$level=3,$size=4){
    Vendor('phpqrcode.phpqrcode');
    $errorCorrectionLevel =intval($level) ;//容错级别 
    $matrixPointSize = intval($size);//生成图片大小 
        //生成二维码图片 
    //echo $_SERVER['REQUEST_URI'];
    $object = new \QRcode();
    
    $date = date('Y-m-d');
    $path = "Uploads/qrcode/".$date.'/';
    if (!file_exists($path)) {
        mkdir ("$path", 0777, true);
    }
    $name = time().'_'.mt_rand();
    //生成的文件名
    $fileName = $path.$name.'.png';
    $res = $object->png($url, $fileName, $errorCorrectionLevel, $matrixPointSize, 2); 
    return $fileName;
 }

微信公众号实战例子：

public function redirect_url(){
    $config = C('WEIXINPAY_CONFIG');
    $oauth = load_wechat('Oauth');
    $result = $oauth->getOauthAccessToken();
    //$result['openid'] = "oB8J-xJiq54q-z4pHP47pLinPf_o";
    $userinfo = $oauth->getOauthUserinfo($result['access_token'], $result['openid']);
    //判断是否第一次登陆
    $wx = M('wx');
    $user = M('user');
    $res = $wx->where("openid = '{$result['openid']}'")->find();

    if($res){   // 判断已经注册的信息
      //是否过期
      if($res['expires_in']<time()){
        $wx->where("openid = '{$result['openid']}'")->setField('access_token',$result['access_token']);
      }
      //查找会员数据
      $info = $user->where("id = {$res['userid']}")->find();
      session('user',$info);
      //是否禁用
      if($info['status']==0){
        $this->redirect('error');
      }
      //是否有二维码
      if(!$res['qrcode']){
        if($res['t_id']){//一级分销
          $siteurl = $_SERVER['SERVER_NAME'];
          $url = 'http://'.$siteurl;
          $img = qrcode($url);
        }else{
          $siteurl = $_SERVER['SERVER_NAME'];
          $url = 'http://'.$siteurl.'?t='.$info['id'];
          $img = qrcode($url);
        }
        $user->where("id = {$res['userid']}")->setField('qrcode','http://'.$siteurl.'/'.$img);
      }
      $this->redirect('Home/Circle/index');


    }else{  // 判断为第一次登录平台
      if(C('is_open_reg')==0){
          $this->redirect('error');
        }
      //是否推荐
      $t_id = session('tid');
      if($t_id){
        $data['t_id'] = $t_id;
      }
      //自动注册
      $data['nickname'] = $userinfo['nickname'];
      $headimgurl = substr($userinfo['headimgurl'], 0,-2);
      $data['headimgurl'] = $headimgurl.'/46';
      $data['country'] = $userinfo['country'];
      $data['province'] = $userinfo['province'];
      $data['sex'] = $userinfo['sex'];
      $data['user_agent'] = serialize(get__browser());
      $data['city'] = $userinfo['city'];
      $data['reg_ip'] = get_client_ip();
      $data['points'] = 10;
      $data['last_ip'] = get_client_ip();
      $data['reg_time'] = time();
      $data['last_time'] = time();
      $data['logins'] = 1;
      $userid = $user->add($data);
      if($userid){
        if($t_id){
          //推荐码（二维码）
          $siteurl = $_SERVER['SERVER_NAME'];
          $url = 'http://'.$siteurl;
          $img = qrcode($url);
        }else{
          $siteurl = $_SERVER['SERVER_NAME'];
          $url = 'http://'.$siteurl.'?t='.$userid;
          $img = qrcode($url);
        }
        $user->where("id = $userid")->setField('qrcode','http://'.$siteurl.'/'.$img);
        $data1['userid'] = $userid;
        $data1['openid'] = $result['openid'];
        $data1['access_token'] = $result['access_token'];
        $data1['expires_in'] = time()+$result['expires_in'];
        $res2 = $wx->add($data1);
        if($res2){
          $data['id'] = $userid;
          session('user',$data);
          $this->redirect('Home/Circle/index');
        }
      }
    }
  }