Install Composer

You can skip this step if you’ve already installed the Composer.

curl -sS https://getcomposer.org/installer | php



Make Composer Globally Available

If you wish, you can additionally install Composer globally so you don’t have to type php/path/to/composer.phar every time. The Windows installer will automatically set up the PATH system variable.

mv composer.phar /usr/local/bin/composer



Working with private repositories

Add composer.json file into your repository which describes it: 

{
  "name": "michalmachovic/composertest",
  "description": "Composer test",
  "type": "vcs",
  "url": "git@github.com:michalmachovic/composertest.git",
  
}



Add following to your main project composer.json file

{
  "repositories": [
    {
      "type": "vcs",
      "url": "git@github.com:michalmachovic/composertest.git"
    }
  ],
  "require": {
    "michalmachovic/composertest": "@dev"
  }
}



Then run composer install - Installs the project dependencies from the composer.lock file if present, or falls back on the composer.json.

composer update - Updates your dependencies to the latest version according to composer.json, and updates the composer.lock file.