How to add PHP CS Fixer to your project?

First of all, add PHP CS Fixer to your project:

composer require --dev friendsofphp/php-cs-fixer

A configuration file called .php-cs-fixer.dist.php needs to be in the root directory of your project if you want to avoid command-line options.

There are many rules that can be set, I usually use these. It follows the PSR12 code standards and checks both the src and tests directories.

You can find more rules in the PHP CS Fixer docs.

Let’s add a some scripts to composer.json file:

Now, just run composer run fix-style and all your code style errors will be fixed.

The — dry-run flag will run the fixer without making changes to your files.

If you are using Git, add .php-cs-fixer.cache (this is the cache file created by php-cs-fixer) to .gitignore:

.php-cs-fixer.cache