PHP-CS-Fixer

PHP Coding Standards Fixer
==========================

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 and many more.

If you are already using a linter to identify coding standards problems in your
code, you know that fixing them by hand is tedious, especially on large
projects. This tool does not only detect them, but also fixes them for you.

Requirements
------------

PHP needs to be a minimum version of PHP 5.3.6.

Installation
------------

Locally
~~~~~~~

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

Globally (manual)
~~~~~~~~~~~~~~~~~

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

.. code-block:: bash

$ wget http://get.sensiolabs.org/php-cs-fixer.phar -O php-cs-fixer
# With a specific version
$ wget http://get.sensiolabs.org/php-cs-fixer-v1.11.phar -O php-cs-fixer

or with curl:

.. code-block:: bash

$ curl http://get.sensiolabs.org/php-cs-fixer.phar -o php-cs-fixer
# With a specific version
$ curl http://get.sensiolabs.org/php-cs-fixer-v1.11.phar -o php-cs-fixer

then:

.. code-block:: bash

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

Then, just run ``php-cs-fixer``.

Globally (Composer)
~~~~~~~~~~~~~~~~~~~

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

.. code-block:: bash

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

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

.. code-block:: bash

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

Globally (homebrew)
~~~~~~~~~~~~~~~~~~~

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

.. code-block:: bash

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

Update
------

Locally
~~~~~~~

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

.. code-block:: bash

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

Globally (manual)
~~~~~~~~~~~~~~~~~

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

.. code-block:: bash

$ sudo php-cs-fixer self-update

Globally (Composer)
~~~~~~~~~~~~~~~~~~~

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

.. code-block:: bash

$ ./composer.phar global update fabpot/php-cs-fixer

Globally (homebrew)
~~~~~~~~~~~~~~~~~~~

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

.. code-block:: bash

$ brew upgrade php-cs-fixer

Usage
-----

The ``fix`` command tries to fix as much coding standards
problems as possible on a given file or files in a given directory and its subdirectories:

.. code-block:: bash

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

The ``--format`` option for the output format. Supported formats are ``txt`` (default one), ``json`` and ``xml``.

The ``--verbose`` option will show the applied fixers. When using the ``txt`` format it will also displays progress notifications.

The ``--rules`` option limits the rules to apply on the
project:

.. code-block:: bash

php php-cs-fixer.phar fix /path/to/project --rules=@PSR2

By default, all PSR fixers are run.

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

.. code-block:: bash

php php-cs-fixer.phar fix /path/to/dir --rules=unix_line_endings,full_opening_tag,no_tab_indentation

You can also blacklist the fixers you don't want by placing a dash in front of the fixer name, if this is more convenient,
using ``-name_of_fixer``:

.. code-block:: bash

php php-cs-fixer.phar fix /path/to/dir --rules=-full_opening_tag,-no_tab_indentation

When using combinations of exact and blacklist fixers, applying exact fixers along with above blacklisted results:

.. code-block:: bash

php php-cs-fixer.phar fix /path/to/project --rules=@Symfony,-@PSR1,-return,strict

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

The ``--allow-risky`` option allows you to set whether riskys fixer may run. Default value is taken from config file.
Risky fixer is a fixer, which could change code behaviour. By default no risky fixers are run.

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

.. code-block:: bash

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

Choose from the list of available fixers:

* **align_double_arrow**
Align double arrow symbols in
consecutive lines.

* **align_equals**
Align equals symbols in
consecutive lines.

* **binary_operator_spaces** [@Symfony]
Binary operators should be
surrounded by at least one
space.

* **blank_line_after_namespace** [@PSR2, @Symfony]
There MUST be one blank line
after the namespace
declaration.

* **blank_line_after_opening_tag** [@Symfony]
Ensure there is no code on
the same line as the PHP open
tag and it is followed by a
blankline.

* **blank_line_before_return** [@Symfony]
An empty line feed should
precede a return statement.

* **braces** [@PSR2, @Symfony]
The body of each structure
MUST be enclosed by braces.
Braces should be properly
placed. Body of braces should
be properly indented.

* **cast_spaces** [@Symfony]
A single space should be
between cast and variable.

* **class_definition** [@PSR2, @Symfony]
Whitespace around the key
words of a class, trait or
interfaces definition should
be one space.

* **concat_with_spaces**
Concatenation should be used
with at least one whitespace
around.

* **concat_without_spaces** [@Symfony]
Concatenation should be used
without spaces.

* **echo_to_print**
Converts echo language
construct to print if
possible.

* **elseif** [@PSR2, @Symfony]
The keyword elseif should be
used instead of else if so
that all control keywords
look like single words.

* **encoding** [@PSR1, @PSR2, @Symfony]
PHP code MUST use only UTF-8
without BOM (remove BOM).

* **ereg_to_preg**
Replace deprecated ereg
regular expression functions
with preg. (Risky fixer!)

* **full_opening_tag** [@PSR1, @PSR2, @Symfony]
PHP code must use the long
tags or the
short-echo tags; it
must not use the other tag
variations.

* **function_declaration** [@PSR2, @Symfony]
Spaces should be properly
placed in a function
declaration.

* **function_typehint_space** [@Symfony]
Add missing space between
function's argument and its
typehint.

* **hash_to_slash_comment** [@Symfony]
Single line comments should
use double slashes (//) and
not hash (#).

* **header_comment**
Add, replace or remove header
comment.

* **heredoc_to_nowdoc** [@Symfony]
Convert heredoc to nowdoc if
possible.

* **include** [@Symfony]
Include/Require and file path
should be divided with a
single space. File path
should not be placed under
brackets.

* **linebreak_after_opening_tag**
Ensure there is no code on
the same line as the PHP open
tag.

* **long_array_syntax**
Arrays should use the long
syntax.

* **lowercase_cast** [@Symfony]
Cast should be written in
lower case.

* **lowercase_constants** [@PSR2, @Symfony]
The PHP constants true,
false, and null MUST be in
lower case.

* **lowercase_keywords** [@PSR2, @Symfony]
PHP keywords MUST be in lower
case.

* **method_argument_space** [@PSR2, @Symfony]
In method arguments and
method call, there MUST NOT
be a space before each comma
and there MUST be one space
after each comma.

* **method_separation** [@Symfony]
Methods must be separated
with one blank line.

* **native_function_casing** [@Symfony]
Function defined by PHP
should be called using the
correct casing.

* **new_with_braces** [@Symfony]
All instances created with
new keyword must be followed
by braces.

* **no_alias_functions** [@Symfony]
Master functions shall be
used instead of aliases.

* **no_blank_lines_after_class_opening** [@Symfony]
There should be no empty
lines after class opening
brace.

* **no_blank_lines_after_phpdoc** [@Symfony]
There should not be blank
lines between docblock and
the documented element.

* **no_blank_lines_before_namespace**
There should be no blank
lines before a namespace
declaration.

* **no_blank_lines_between_uses** [@Symfony]
Removes line breaks between
use statements.

* **no_closing_tag** [@PSR2, @Symfony]
The closing ?> tag MUST be
omitted from files containing
only PHP.

* **no_duplicate_semicolons** [@Symfony]
Remove duplicated semicolons.

* **no_empty_phpdoc** [@Symfony]
There should not be empty
PHPDoc blocks.

* **no_extra_consecutive_blank_lines** [@Symfony]
Removes extra blank lines
and/or blank lines following
configuration.

* **no_leading_import_slash** [@Symfony]
Remove leading slashes in use
clauses.

* **no_leading_namespace_whitespace** [@Symfony]
The namespace declaration
line shouldn't contain
leading whitespace.

* **no_multiline_whitespace_around_double_arrow** [@Symfony]
Operator => should not be
surrounded by multi-line
whitespaces.

* **no_multiline_whitespace_before_semicolons**
Multi-line whitespace before
closing semicolon are
prohibited.

* **no_php4_constructor**
Convert PHP4-style
constructors to __construct.
(Risky fixer!)

* **no_short_bool_cast** [@Symfony]
Short cast bool using double
exclamation mark should not
be used.

* **no_short_echo_tag**
Replace short-echo long format syntax.

* **no_singleline_whitespace_before_semicolons** [@Symfony]
Single-line whitespace before
closing semicolon are
prohibited.

* **no_spaces_after_function_name** [@PSR2, @Symfony]
When making a method or
function call, there MUST NOT
be a space between the method
or function name and the
opening parenthesis.

* **no_spaces_inside_parenthesis** [@PSR2, @Symfony]
There MUST NOT be a space
after the opening
parenthesis. There MUST NOT
be a space before the closing
parenthesis.

* **no_tab_indentation** [@PSR2, @Symfony]
Code MUST use an indent of 4
spaces, and MUST NOT use tabs
for indenting.

* **no_trailing_comma_in_list_call** [@Symfony]
Remove trailing commas in
list function calls.

* **no_trailing_comma_in_singleline_array** [@Symfony]
PHP single-line arrays should
not have trailing comma.

* **no_trailing_whitespace** [@PSR2, @Symfony]
Remove trailing whitespace at
the end of non-blank lines.

* **no_trailing_whitespace_in_comment** [@PSR2, @Symfony]
There MUST be no trailing
spaces inside comments and
phpdocs.

* **no_unneeded_control_parentheses** [@Symfony]
Removes unneeded parentheses
around control statements.

* **no_unreachable_default_argument_value** [@Symfony]
In method arguments there
must not be arguments with
default values before
non-default ones.

* **no_unused_imports** [@Symfony]
Unused use statements must be
removed.

* **no_useless_return**
There should not be an empty
return statement at the end
of a function.

* **no_whitespace_before_comma_in_array** [@Symfony]
In array declaration, there
MUST NOT be a whitespace
before each comma.

* **no_whitespace_in_blank_lines** [@Symfony]
Remove trailing whitespace at
the end of blank lines.

* **not_operator_with_space**
Logical NOT operators (!)
should have leading and
trailing whitespaces.

* **not_operator_with_successor_space**
Logical NOT operators (!)
should have one trailing
whitespace.

* **object_operator_without_whitespace** [@Symfony]
There should not be space
before or after object
T_OBJECT_OPERATOR.

* **ordered_imports**
Ordering use statements.

* **php_unit_construct**
PHPUnit assertion method
calls like
"->assertSame(true, $foo)"
should be written with
dedicated method like
"->assertTrue($foo)". (Risky
fixer!)

* **php_unit_strict**
PHPUnit methods like
"assertSame" should be used
instead of "assertEquals".
(Risky fixer!)

* **phpdoc_align** [@Symfony]
All items of the @param,
@throws, @return, @var, and
@type phpdoc tags must be
aligned vertically.

* **phpdoc_indent** [@Symfony]
Docblocks should have the
same indentation as the
documented subject.

* **phpdoc_inline_tag** [@Symfony]
Fix phpdoc inline tags, make
inheritdoc always inline.

* **phpdoc_no_access** [@Symfony]
@access annotations should be
omitted from phpdocs.

* **phpdoc_no_empty_return** [@Symfony]
@return void and @return null
annotations should be omitted
from phpdocs.

* **phpdoc_no_package** [@Symfony]
@package and @subpackage
annotations should be omitted
from phpdocs.

* **phpdoc_order**
Annotations in phpdocs should
be ordered so that param
annotations come first, then
throws annotations, then
return annotations.

* **phpdoc_property**
@property tags should be used
rather than other variants.

* **phpdoc_scalar** [@Symfony]
Scalar types should always be
written in the same form.
"int", not "integer"; "bool",
not "boolean"; "float", not
"real" or "double".

* **phpdoc_separation** [@Symfony]
Annotations in phpdocs should
be grouped together so that
annotations of the same type
immediately follow each
other, and annotations of a
different type are separated
by a single blank line.

* **phpdoc_summary** [@Symfony]
Phpdocs summary should end in
either a full stop,
exclamation mark, or question
mark.

* **phpdoc_to_comment** [@Symfony]
Docblocks should only be used
on structural elements.

* **phpdoc_trim** [@Symfony]
Phpdocs should start and end
with content, excluding the
very first and last line of
the docblocks.

* **phpdoc_type_to_var** [@Symfony]
@type should always be
written as @var.

* **phpdoc_types** [@Symfony]
The correct case must be used
for standard PHP types in
phpdoc.

* **phpdoc_var_to_type**
@var should always be written
as @type.

* **phpdoc_var_without_name** [@Symfony]
@var and @type annotations
should not contain the
variable name.

* **pre_increment** [@Symfony]
Pre
incrementation/decrementation
should be used if possible.

* **print_to_echo** [@Symfony]
Converts print language
construct to echo if
possible.

* **psr0**
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.
(Risky fixer!)

* **self_accessor** [@Symfony]
Inside a classy element
"self" should be preferred to
the class name itself.

* **short_array_syntax**
PHP arrays should use the PHP
5.4 short-syntax.

* **short_scalar_cast** [@Symfony]
Cast "(boolean)" and
"(integer)" should be written
as "(bool)" and "(int)".
"(double)" and "(real)" as
"(float)".

* **simplified_null_return** [@Symfony]
A return statement wishing to
return nothing should be
simply "return".

* **single_blank_line_at_eof** [@PSR2, @Symfony]
A file must always end with a
single empty line feed.

* **single_blank_line_before_namespace** [@Symfony]
There should be exactly one
blank line before a namespace
declaration.

* **single_import_per_statement** [@PSR2, @Symfony]
There MUST be one use keyword
per declaration.

* **single_line_after_imports** [@PSR2, @Symfony]
Each namespace use MUST go on
its own line and there MUST
be one blank line after the
use statements block.

* **single_quote** [@Symfony]
Convert double quotes to
single quotes for simple
strings.

* **space_after_semicolon** [@Symfony]
Fix whitespace after a
semicolon.

* **standardize_not_equals** [@Symfony]
Replace all <> with !=.

* **strict_comparison**
Comparison should be strict.
(Risky fixer!)

* **strict_param**
Functions should be used with
$strict param. (Risky fixer!)

* **switch_case_semicolon_to_colon** [@PSR2, @Symfony]
A case should be followed by
a colon and not a semicolon.

* **switch_case_space** [@PSR2, @Symfony]
Removes extra spaces between
colon and case value.

* **ternary_operator_spaces** [@Symfony]
Standardize spaces around
ternary operator.

* **trailing_comma_in_multiline_array** [@Symfony]
PHP multi-line arrays should
have a trailing comma.

* **trim_array_spaces** [@Symfony]
Arrays should be formatted
like function/method
arguments, without leading or
trailing single line space.

* **unalign_double_arrow** [@Symfony]
Unalign double arrow symbols.

* **unalign_equals** [@Symfony]
Unalign equals symbols.

* **unary_operator_spaces** [@Symfony]
Unary operators should be
placed adjacent to their
operands.

* **unix_line_endings** [@PSR2, @Symfony]
All PHP files must use the
Unix LF line ending.

* **visibility_required** [@PSR2, @Symfony]
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.

* **whitespace_after_comma_in_array** [@Symfony]
In array declaration, there
MUST be a whitespace after
each comma.


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

.. code-block:: bash

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
project configuration in a ``.php_cs.dist`` file in the root directory
of your project. The file must return an instance of ``PhpCsFixer\ConfigInterface``,
which lets you configure the rules, the files and directories that
need to be analyzed. You may also create ``.php_cs`` file, which is
the local configuration that will be used instead of the project configuration. It
is a good practice to add that file into your ``.gitignore`` file.
With the ``--config`` option you can specify the path to the
``.php_cs`` file.

The example below will add two fixers to the default list of PSR2 set fixers:

.. code-block:: php


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

return PhpCsFixer\Config::create()
->setRules(array(
'@PSR2' => true,
'strict_param' => true,
'short_array_syntax' => true,
))
->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 ``Symfony`` Fixers but the ``full_opening_tag`` Fixer.

.. code-block:: php


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

return PhpCsFixer\Config::create()
->setRules(array(
'@Symfony' => true,
'full_opening_tag' => false,
))
->finder($finder)
;

By using ``--using-cache`` option with yes or no you can set if the caching
mechanism should be used.

Caching
-------

The caching mechanism is enabled by default. This will speed up further runs by
fixing only files that were modified since the last run. The tool will fix all
files if the tool version has changed or the list of fixers has changed.
Cache is supported only for tool downloaded as phar file or installed via
composer.

Cache can be disabled via ``--using-cache`` option or config file:

.. code-block:: php


return PhpCsFixer\Config::create()
->setUsingCache(false)
;

Cache file can be specified via ``--cache-file`` option or config file:

.. code-block:: php


return PhpCsFixer\Config::create()
->setCacheFile(__DIR__.'/.php_cs.cache')
;

Using PHP CS Fixer on Travis
----------------------------

Require ``fabpot/php-cs-fixer`` as a `dev`` dependency:

.. code-block:: bash

$ ./composer.phar require --dev fabpot/php-cs-fixer

Create a build file to run ``php-cs-fixer`` on Travis. It's advisable to create a dedicated directory
for PHP CS Fixer cache files and have Travis cache it between builds.

.. code-block:: yaml

language: php
php:
- 5.5
sudo: false
cache:
directories:
- "$HOME/.composer/cache"
- "$HOME/.php-cs-fixer"
before_script:
- mkdir -p "$HOME/.php-cs-fixer"
script:
- vendor/bin/php-cs-fixer fix --cache-file "$HOME/.php-cs-fixer/.php_cs.cache" --dry-run --diff --verbose

Note: This will only trigger a build if you have a subscription for Travis
or are using their free open source plan.

Exit codes
----------

Exit code are build using following bit flags:

* 0 OK
* 4 Some files have invalid syntax (only in dry-run mode)
* 8 Some files need fixing (only in dry-run mode)
* 16 Configuration error of the application
* 32 Configuration error of a Fixer

Helpers
-------

Dedicated plugins exist for:

* `Atom`_
* `NetBeans`_
* `PhpStorm`_
* `Sublime Text`_
* `Vim`_

Contribute
----------

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

Fixers
~~~~~~

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

Configs
~~~~~~~

A *config* knows about the CS rules 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).

.. _php-cs-fixer.phar: http://get.sensiolabs.org/php-cs-fixer.phar
.. _Atom: https://github.com/Glavin001/atom-beautify
.. _NetBeans: http://plugins.netbeans.org/plugin/49042/php-cs-fixer
.. _PhpStorm: http://tzfrs.de/2015/01/automatically-format-code-to-match-psr-standards-with-phpstorm
.. _Sublime Text: https://github.com/benmatselby/sublime-phpcs
.. _Vim: https://github.com/stephpy/vim-php-cs-fixer
.. _contribute: https://github.com/FriendsOfPhp/php-cs-fixer/blob/master/CONTRIBUTING.md