Angular 5 - Front-end Back-end Separation and PHP Framework will be restful API

I am going to build an Angular 5 app, the front-end and back-end both will be in Angular only and PHP frameworks (like Yii or Laravel) will work as RESTful API.

BTW, I've built Angular 5 with front-end and PHP with the back-end, so I have an idea about this kind of folder structure.

But, I would like to know best practices while separating Angular with front-end and back-end, and PHP will be REST only.

Moreover, I've few options in mind.

1. Two main folders

• Angular
  • src
    • Front-end
    • Back-end
• Laravel REST

2. Three different main folders

• Angular Front-end
• Angular Back-end
• Laravel REST

I know #1 is better but I'd like to have few more options and then I want to select a best practice.

Any quick help or ideas would be greatly appreciated.

via Chebli Mohamed