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【Laravelエラー】Database hosts array is empty.

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この記事の要点
  • Laravel の Database hosts array is empty
  • 原因: config/database.php の host 設定が空、または .env の DB_HOST 未設定
  • 対処: .env に DB_HOST=127.0.0.1 等を設定 → php artisan config:clear
  • config/database.php 側の env('DB_HOST') 参照が正しいか確認

 

エラー内容

Database hosts array is empty.

 

発生条件/原因/対処法

DBの接続情報に誤りがある。

configディレクトリのdatabase.phpのhostの項目に誤りがないか要確認。.envの値も確認すべし。

        'mysql' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE'),
            'username' => env('DB_USERNAME'),
            'password' => env('DB_PASSWORD'),
            'unix_socket' => env('DB_SOCKET'),
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'strict' => true,
            'engine' => null,
        ],

 

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2026-05-15 03:52:15 1610

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