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// iniciar composer e criar composer.json
composer init

// instalar dependecias
composer require nomeda/dependencia || composer require-dev nomeda/dependencia
composer install || composer update

// dump dos autoloads
composer dumpautoload

// remover packages
composer remove nomeda/dependencia

// criar novo projeto composer numa pasta definida
composer create-project nomeda/dependencia pasta


// composer autoload
require_once '../vendor/autoload.php';