Cheatsheet Composer

Installing dependency

This command doesn’t change any file. If composer.lock is not present, it will create it.

• Downloads and installs all the libraries and dependencies outlined in the composer.lock file. If the file does not exist it will look for composer.json and do the same, creating a composer.lock file.

composer install

• Simulates the install without installing anything

composer install --dry-run

composer.lock should always be committed to the repository. It has all the information needed to bring the local dependencies to the last committed state. If that file is modified on the repository, you will need to run composer install again after fetching the changes to update your local dependencies to those on that file.

Adding packages

This command changes both the composer.json and composer.lock files.

• Adds package from vendor to composer.json’s require section and installs it.

  composer require vendor/package

• Adds package from vendor to composer.json’s require-dev section and installs it.

  composer require vendor/package --dev

Updating packages

This command changes only the composer.lock file.

• Updates all packages

  composer update

• Updates all packages and its dependencies

  composer update --with-dependencies

• Updates a certain package from vendor

  composer update vendor/package

• Updates all packages from vendor

  composer update vendor/*

• Updates composer.lock hash without updating any packages

  composer update --lock

Removing packages

This command changes both the composer.json and composer.lock files.

• Removes vendor/package from composer.json and uninstalls it

  composer remove vendor/package

Happy Coding 🔥