The PHP Coding Standards Fixer tool fixes most issues in your code when you want to follow the PHP coding standards as defined in the PSR-1 and PSR-2 documents.

If you are already using PHP_CodeSniffer to identify coding standards problems in your code, you know that fixing them by hand is tedious, especially on large projects. This tool does the job for you.

PHP needs to be a minimum version of PHP 5.3.6

Download the php-cs-fixer.phar file and store it somewhere on your computer.

You can run these commands to easily access php-cs-fixer from anywhere on your system:

$ sudo wget http://get.sensiolabs.org/php-cs-fixer.phar -O /usr/local/bin/php-cs-fixer

or with curl:

$ sudo curl http://get.sensiolabs.org/php-cs-fixer.phar -o /usr/local/bin/php-cs-fixer

then:

$ sudo chmod a+x /usr/local/bin/php-cs-fixer

Then, just run php-cs-fixer.

To install PHP-CS-Fixer, install Composer and issue the following command:

$ ./composer.phar global require fabpot/php-cs-fixer @stable

Then, make sure you have ~/.composer/vendor/bin in your PATH, and you're good to go:

export PATH="$PATH:$HOME/.composer/vendor/bin"

PHP-CS-Fixer is part of the homebrew-php project. Follow the installation instructions at https://github.com/josegonzalez/homebrew-php if you don't already have it.

$ brew tap josegonzalez/homebrew-php
$ brew install php-cs-fixer

The self-update command tries to update php-cs-fixer itself:

$ php php-cs-fixer.phar self-update

You can update php-cs-fixer through this command:

$ sudo php-cs-fixer self-update

You can update php-cs-fixer through this command:

$ brew upgrade php-cs-fixer

The fix command tries to fix as much coding standards problems as possible on a given file or directory:

php php-cs-fixer.phar fix /path/to/dir
php php-cs-fixer.phar fix /path/to/file

The --level option limits the fixers to apply on the project:

php php-cs-fixer.phar fix /path/to/project --level=psr0
php php-cs-fixer.phar fix /path/to/project --level=psr1
php php-cs-fixer.phar fix /path/to/project --level=psr2
php php-cs-fixer.phar fix /path/to/project --level=symfony

By default, all PSR-2 fixers and some additional ones are run. The "contrib level" fixers cannot be enabled via this option; you should instead set them manually by their name via the --fixers option.

The --fixers option lets you choose the exact fixers to apply (the fixer names must be separated by a comma):

php php-cs-fixer.phar fix /path/to/dir --fixers=linefeed,short_tag,indentation

You can also blacklist the fixers you don't want if this is more convenient, using -name:

php php-cs-fixer.phar fix /path/to/dir --fixers=-short_tag,-indentation

A combination of --dry-run, --verbose and --diff will display summary of proposed fixes, leaving your files unchanged.

The command can also read from standard input, in which case it won't automatically fix anything:

cat foo.php | php php-cs-fixer.phar fix -v --diff -

Choose from the list of available fixers:

• psr0 [PSR-0] Classes must be in a path that

  matches their namespace, be at least one namespace deep, and the class name should match the file name.

• encoding [PSR-1] PHP code MUST use only UTF-8

  without BOM (remove BOM).

• short_tag [PSR-1] PHP code must use the long <?php

  ?> tags or the short-echo <?= ?> tags; it must not use the other tag variations.

• braces [PSR-2] The body of each structure MUST be

  enclosed by braces. Braces should be properly placed. Body of braces should be properly indented.

• elseif [PSR-2] The keyword elseif should be used

  instead of else if so that all control keywords looks like single words.

• eof_ending [PSR-2] A file must always end with an

  empty line feed.

• function_declaration [PSR-2] Spaces should be properly placed

  in a function declaration.

• indentation [PSR-2] Code MUST use an indent of 4

  spaces, and MUST NOT use tabs for indenting.

• line_after_namespace [PSR-2] There MUST be one blank line after

  the namespace declaration.

• linefeed [PSR-2] All PHP files must use the Unix LF

  (linefeed) line ending.

• lowercase_constants [PSR-2] The PHP constants true, false, and

  null MUST be in lower case.

• lowercase_keywords [PSR-2] PHP keywords MUST be in lower

  case.

• multiple_use [PSR-2] There MUST be one use keyword per

  declaration.

• php_closing_tag [PSR-2] The closing ?> tag MUST be omitted

  from files containing only PHP.

• trailing_spaces [PSR-2] Remove trailing whitespace at the

  end of non-blank lines.

• visibility [PSR-2] Visibility MUST be declared on all

  properties and methods; abstract and final MUST be declared before the visibility; static MUST be declared after the visibility.

• concat_without_spaces [symfony] Concatenation should be used

  without spaces.

• extra_empty_lines [symfony] Removes extra empty lines.

• include [symfony] Include and file path should be

  divided with a single space. File path should not be placed under brackets.

• multiline_array_trailing_comma [symfony] PHP multi-line arrays should

  have a trailing comma.

• new_with_braces [symfony] All instances created with new

  keyword must be followed by braces.

• object_operator [symfony] There should not be space before

  or after object T_OBJECT_OPERATOR.

• operators_spaces [symfony] Operators should be arounded by

  at least one space.

• phpdoc_params [symfony] All items of the @param phpdoc

  tags must be aligned vertically.

• return [symfony] An empty line feed should

  precede a return statement.

• single_array_no_trailing_comma [symfony] PHP single-line arrays should

  not have trailing comma.

• spaces_cast [symfony] A single space should be between

  cast and variable.

• standardize_not_equal [symfony] Replace all <> with !=.

• ternary_spaces [symfony] Standardize spaces around

  ternary operator.

• unused_use [symfony] Unused use statements must be

  removed.

• whitespacy_lines [symfony] Remove trailing whitespace at

  the end of blank lines.

• concat_with_spaces [contrib] Concatenation should be used

  with at least one whitespace around.

• ordered_use [contrib] Ordering use statements.

• short_array_syntax [contrib] PHP array's should use the PHP

  5.4 short-syntax.

• strict [contrib] Comparison should be strict.

  Warning! This could change code behavior.

The --config option customizes the files to analyse, based on some well-known directory structures:

# For the Symfony 2.3+ branch
php php-cs-fixer.phar fix /path/to/sf23 --config=sf23

Choose from the list of available configurations:

• default A default configuration
• magento The configuration for a Magento application
• sf23 The configuration for the Symfony 2.3+ branch

The --dry-run option displays the files that need to be fixed but without actually modifying them:

php php-cs-fixer.phar fix /path/to/code --dry-run

Instead of using command line options to customize the fixer, you can save the configuration in a .php_cs file in the root directory of your project. The file must return an instance of SymfonyCSConfigInterface, which lets you configure the fixers, the files, and directories that need to be analyzed:

<?php

$finder = Symfony\CS\Finder\DefaultFinder::create()
    ->exclude('somedir')
    ->in(__DIR__)
;

return Symfony\CS\Config\Config::create()
    ->fixers(array('indentation', 'elseif'))
    ->finder($finder)
;

You may also use a blacklist for the Fixers instead of the above shown whitelist approach. The following example shows how to use all Fixers but the psr0 fixer. Note the additional - in front of the Fixer name.

<?php

$finder = Symfony\CS\Finder\DefaultFinder::create()
    ->exclude('somedir')
    ->in(__DIR__)
;

return Symfony\CS\Config\Config::create()
    ->fixers(array('-psr0'))
    ->finder($finder)
;

With the --config-file option you can specify the path to the .php_cs file.

Dedicated plugins exist for:

• Vim
• Sublime Text
• NetBeans
• PhpStorm

The tool comes with quite a few built-in fixers and finders, but everyone is more than welcome to contribute more of them.

A fixer is a class that tries to fix one CS issue (a Fixer class must implement FixerInterface).

A config knows about the CS level and the files and directories that must be scanned by the tool when run in the directory of your project. It is useful for projects that follow a well-known directory structures (like for Symfony projects for instance).