yii2.0高级版创建api应用步骤

1.复制backend目录，改成api目录，复制environments/dev/backend，改成environments/dev/api,复制environments/prod/backend,改成environments/prod/api

2.修改common/config/bootstrap.php，新增

Yii::setAlias('@api', dirname(dirname(__DIR__)) . '/api');

3.修改api/config/main.php配置文件

    'id' => 'app-api',
    'basePath' => dirname(__DIR__),
    'controllerNamespace' => 'api\controllers',
    'bootstrap' => ['log'],