How to export whole DB (With data) in a sql file by hitting a button in Laravel 5.5 - development

How to export whole DB (With data) in a sql file by hitting a button in Laravel 5.5

I need after click over a button whole DB should export in a sql file alike it works in phpmyadmin. but this time i wanna build same in Laravel 5.5.

from Laravel Questions and Answers https://laravelquestions.com/php/how-to-export-whole-db-with-data-in-a-sql-file-by-hitting-a-button-in-laravel-5-5/
via Lzo Media