how to install composer in laravel code example

Example 1: install laravel

composer create-project --prefer-dist laravel/laravel blog "6.*"

Example 2: laravel install

composer global require laravel/installer

Example 3: install laravel

laravel install on windows
-----------------------------------
1-composer install
https://getcomposer.org/download/
2-laravel install using composer
composer global require laravel/installer
3-create new project
laravel new blog
cd blog 
4-serve project to localhost
php artisan serve

Example 4: laravel install

composer create-project --prefer-dist laravel/laravel blog "5.6.*"

Example 5: laravel 4 installer

composer global require "laravel/installer=~4.0"