how i can install laravel code example

Example 1: how to install new project in laravel

You can create project by 2 ways:

First is installing it without defining version:
composer create-project laravel/laravel yourProjectName

Secondly you can install by defining version:
composer create-project laravel/laravel="VersionOfYourChoice" yourProjectName

Example 2: laravel installer version

Laravel Installer Version Check 
laravel -version
ex. laravel -version
Result : Laravel Installer 4.1.1