composer.lock composer update1. The composer.lock file will be ignored
2. composer.json file dependencies will be installed and updated (if a dependency is not installed it will be downloaded)composer update vendor/packagecomposer update "vendor/*"composer.json we can use --with and provide a custom versioncomposer update --with vendor/package:2.0.1composer require phpunit/phpunitminor and patch versions of the package but major will be the specified versioncomposer require "vendor/package:2.*"remove command removes packages from vendor and composer.json filecomposer remove vendor/packagecomposer remove vendor/package vendor/package2composerprojectname based on laravel/laravel packagecomposer create-project laravel/laravel projectname