Laravel SQLSTATE [HY000] [1049]未知数据库'previous_db_name' [英] Laravel SQLSTATE[HY000] [1049] Unknown database 'previous_db_name'

问题描述

在Laravel项目中使用php artisan migrate时出现此错误.

I have this error when i use php artisan migrate in my Laravel project.

[PDOException]
SQLSTATE[HY000] [1049] Unknown database 'previous_db_name'

这是我的database.php文件:

'default' => env('DB_CONNECTION', 'mysql'),
'connections' => [

    'mysql' => [
        'driver'    => 'mysql',
        'host'      => env('DB_HOST', 'localhost'),
        'database'  => env('DB_DATABASE', 'current_db_name'),
        'username'  => env('DB_USERNAME', 'root'),
        'password'  => env('DB_PASSWORD', ''),
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
    ],
],

我在此问题和这个问题，但是它们都没有帮助.

I saw this error in this question and this question but none of them was not helpful.

推荐答案

它显然提到没有名为 previous_db_name 的数据库.

It clearly mentions that there's no such database named previous_db_name.

从看来， database.php 文件不是变量的来源.

From what it seems the database.php file is not where the variable is from.

检查Laravel安装文件夹中的 .env 文件，以查看是否那是您错误指定的数据库名称.

Check the .env file in your Laravel installation folder to see if that's the database name that you have wrongly specified.

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