laravel documentation
Before starting this hope you installed composer dependancy manager for PHP.
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So if you want to create a project by name of 'first_laravel_app' in directory C:/xampp/htdocs/ then what you need to do is
Locate your project parent directory using cmd
>cd c:/xampp/htdocs
and fire this command
>composer create-project laravel/laravel first_laravel_app --prefer-dist
And its done, this is really easy and it also creates Application Key automatically for you.
# I hope it will help you.
# Namaste 
