duandai6373
2018-02-01 05:13
浏览 231
已采纳

未定义的变量：Laravel 5.3中的_ENV

I was testing my system with Laravel 5.3:

For past few weeks my system was working fine. Since last weekend, I encountered the same error TWICE as below:-

Notice: Undefined variable: _ENV in C:\NewFolder\htdocs\project\vendor\vlucas\phpdotenv\src\Loader.php on line 303

Warning: array_key_exists() expects parameter 2 to be array, null given in C:\NewFolder\htdocs\project\vendor\vlucas\phpdotenv\src\Loader.php on line 303

Loader.php:

public function getEnvironmentVariable($name)
{
    switch (true) {
        case array_key_exists($name, $_ENV): // line 303 here
            return $_ENV[$name];
        case array_key_exists($name, $_SERVER):
            return $_SERVER[$name];
        default:
            $value = getenv($name);
            return $value === false ? null : $value;
    }
}

.env

APP_ENV=local
APP_KEY=base64:oTU0Ok1mmE6x0qEosGKhCSxpQLAlBAnNreH7sFAKkdM=
APP_DEBUG=true
APP_LOG_LEVEL=debug
APP_URL=http://localhost

DB_CONNECTION=mysql
DB_HOST=localhost
DB_PORT=3306
DB_DATABASE=new_db
DB_USERNAME=root
DB_PASSWORD=

BROADCAST_DRIVER=log
CACHE_DRIVER=file
SESSION_DRIVER=file
QUEUE_DRIVER=sync

REDIS_HOST=127.0.0.1
REDIS_PASSWORD=null
REDIS_PORT=6379

MAIL_DRIVER=smtp
MAIL_HOST=mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=null
MAIL_PASSWORD=null
MAIL_ENCRYPTION=null

PUSHER_KEY=
PUSHER_SECRET=
PUSHER_APP_ID=
  • When the above error appeared on the first time(when I loaded login page), I cleared my browser cache and history, the system managed to back to normal.
  • When the same error appeared on second time(in the mid of testing process), I did the same as first time, cleared browser cache and history, but it could not helped, the error still show after I refreshed my browser. So I executed php artisan view:clear and php artisan cache:clear but still failed to get back to normal.

Anyone have any idea on why is this happening? Thanks

The version I used:

  • OS: Window 7
  • Browser: Mozilla Firefox
  • PHP: 7.1.1
  • Laravel: 5.3

图片转代码服务由CSDN问答提供 功能建议

我用Laravel 5.3测试我的系统：

过去几周 我的系统工作正常。 自上周末以来，我遇到了同样的错误 TWICE ，如下所示： -

注意：未定义的变量：C：\ NewFolder \ htdocs中的_ENV 第303行上的\ project \ vendor \ vlucas \ phpdotenv \ src \ Loader.php

警告：array_key_exists（）期望参数2为数组，在C：\ NewFolder \ htdocs \中给出null 第303行的project \ vendor \ vlucas \ phpdotenv \ src \ Loader.php

Loader.php： 

  public function getEnvironmentVariable（$ name）
 {
 switch（true）{
 case array_key_exists（$ name，$ _ ENV）：// line 303 here 
 return $ _ENV [$ name  ]; 
 case array_key_exists（$ name，$ _SERVER）：
返回$ _SERVER [$ name]; 
默认值：
 $ value = getenv（$ name）; 
返回$ value === false？  null：$ value; 
} 
} 
   
 
 
  .env   
 
 
  APP_ENV =本地
APP_KEY = BASE64：oTU0Ok1mmE6x0qEosGKhCSxpQLAlBAnNreH7sFAKkdM = 
APP_DEBUG =真
APP_LOG_LEVEL =调试
APP_URL = HTTP：//本地主机
 
DB_CONNECTION = MySQL的
DB_HOST =本地主机
DB_PORT = 3306 
DB_DATABASE = new_db 
DB_USERNAME =根\  nDB_PASSWORD = 
 
BROADCAST_DRIVER = LOG 
CACHE_DRIVER =文件
SESSION_DRIVER =文件
QUEUE_DRIVER =同步
 
REDIS_HOST = 127.0.0.1 
REDIS_PASSWORD = NULL 
REDIS_PORT = 6379 
 
MAIL_DRIVER = SMTP 
MAIL_HOST = mailtrap.io 
MAIL_PORT  = 2525 
MAIL_USERNAME = null 
MAIL_PASSWORD = null 
MAIL_ENCRYPTION = null 
 
PUSHER_KEY = 
PUSHER_SECRET = 
PUSHER_APP_ID = 
   
 
 
     
 
  • 当上述情况时 错误出现在第一次（当我加载登录页面时），我清除了我的浏览器缓存和历史记录，系统设法恢复正常。 
 
  • 当第二次出现相同的错误时（在 在测试过程的中间），我第一次做了同样的事情，清除了浏览器缓存和历史记录，但它无济于事 ，我刷新浏览器后仍然显示错误。 所以我执行了 php artisan view：clear 和 php artisan cache：clear 但仍未能恢复正常。 
  
 \  n 
    任何人都知道为什么会这样？ 谢谢 
 
 
     我使用的版本：  
 
 
       
 
    • 操作系统：Window 7  
  
    • 浏览器：Mozilla Firefox  
 
    •  PHP：7.1.1  
 
    •  Laravel：5.3
  • 写回答
  • 好问题 提建议
  • 追加酬金
  • 关注问题
  • 收藏
  • 邀请回答

3条回答 默认 最新

  • doushih06137 2018-02-09 02:28
    已采纳

    After some finding and research, I found there are some similar issues from Github #8191.

    I able to get rid of the error by running php artisan config:cache. Means that Laravel will read the environment variable from the config file rather than reading the environment variable directly from .env

    评论
    解决 无用
    打赏 举报
查看更多回答(2条)

报告相同问题？

提交

相关推荐 更多相似问题