Is codeigniter 3 code standards is out dated??

Vimal, if you want create everything (controllers, models, views, helpers, layout/template, auth, etc.) manually and you don't really care about namespace, traits etc, and you like this framewok. So use it. It's a mistake believes that CI can't be used on big projects.

If you want everything (controllers, models, views, helpers, layout/template, auth, etc.) automatic you may consider use Yii Framewok 2, they have a web interface to built almost everything that you need, they brings to you, some migrates to ease your life, use by default composer, bower, twitter bootstrat 3, and many other features. However the learning curve is a little bit higher than CI.

If you want a skeleton to everything (controllers, models, layout/template, auth, etc.) partially automatic you may consider use Laravel 5, they have a powerful cli interface that generate you models, controllers, etc. They brings to you, composer, twitter bootstrat 3, blade template engine, etc. However the learning curve is a little bit higher than CI.

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