字符集

common/config/main.php

@@ -14,7 +14,7 @@ return [
 			'dsn' => getenv('DB_DSN'),
 			'username' => getenv('DB_USERNAME'),
 			'password' => getenv('DB_PASSWORD'),
-			'charset' => 'utf8',
+			'charset' => 'utf8mb4',
 		],
 		'db2' => [
 			'class' => 'yii\db\Connection',