Connection refused (SQL: select * from information_s chema.tables where table_schema = apidemo and table_name = migrations)

LARAVEL 执行：

 $ php artisan migrate

报错 ,把 .env文件里的

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306

 换成：

DB_CONNECTION=mysql
DB_HOST=localhost
DB_PORT=3306

详情：https://stackoverflow.com/questions/48455341/laravel-php-sqlstatehy000-2002-php-network-getaddresses-getaddrinfo-faile