ely/php-code-style

Set of PHP-CS-Fixer rules used in the development of Ely.by PHP projects

0.2.0 2018-08-08 07:41 UTC

README

Set of PHP-CS-Fixer rules used in development of Ely.by PHP projects. It's suited for PHP 7.1 and above. You can use it as a ready-made set of rules or just some of them.

Latest Version on Packagist Total Downloads Software License Build Status

Installation

First of all install Ely.by PHP-CS-Fixer rules via composer with PHP-CS-Fixer:

composer require --dev friendsofphp/php-cs-fixer ely/php-code-style

Then create file .php_cs with following contents:

<?php
$finder = \PhpCsFixer\Finder::create()
    ->in(__DIR__);

return \Ely\CS\Config::create()
    ->setFinder($finder);

And that's it. You can now find code style violations with following command:

vendor/bin/php-cs-fixer --diff --dry-run -v fix 

And then completely fix them all with:

vendor/bin/php-cs-fixer fix

Configuration

You can pass a custom set of rules to the \Ely\CS\Config::create() call. For example, it can be used to validate a project with PHP 7.0 compatibility:

<?php
return \Ely\CS\Config::create([
    'visibility_required' => ['property', 'method'],
])->setFinder($finder);

Code style

Our code style is based primarily on PSR-2, while borrowing some ideas from PSR-12 with some changes.

Example

This example encompasses some of the rules below as a quick overview:

<?php
declare(strict_types=1);

namespace Vendor\Package;

use Vendor\Package\SomeNamespace\ClassA;

class Foo extends Bar implements FooInterface {
    use SomeTrait;

    private const SAMPLE_1 = 123;
    private const SAMPLE_2 = 321;

    public $field1;

    public $field2;

    public function sampleFunction(int $a, int $b = null): array {
        if ($a === $b) {
            $result = bar();
        } else {
            $result = BazClass::bar($this->field1, $this->field2);
        }

        return $result;
    }
    
    public function setToNull(): self {
        $this->field1 = null;
        return $this;
    }

}

Key differences:

  • Opening braces for classes MUST be on the same line.

  • Opening braces for methods MUST be on the next line.

Additional rules:

  • There MUST be one empty line before return statement, except when there is only one statement before it.

    <?php
    
    function a() {
        $a = '123';
        return $a . ' is a number';
    }
    
    function b() {
        $a = '123';
        $b = 'is';
    
        return $a . ' ' . $b . ' a number';
    }
  • There MUST be one blank line around class body, but there MUST be no blank lines around anonymous class body.

    <?php
    class Test {
    
        public function method() {
            $obj = new class extends Foo {
                public function overriddenMethod() {
                    // code body
                }
            };
        }
    
    }
  • Visibility MUST be declared for all methods, properties and constants.

  • There MUST be one blank line after an each of if, switch, for, foreach, while and do-while bodies.

    <?php
    if (true) {
        // some actions here
    }
    
    echo 'the next statement is here';

Using our fixers

First of all, you must install Ely.by PHP-CS-Fixer package as described in the installation chapter. After that you can enable our custom fixers with registerCustomFixers method:

<?php
// Your Finder configuration

return \PhpCsFixer\Config::create()
    ->registerCustomFixers(new \Ely\CS\Fixers());

And then you'll be able to use our custom rules.

Ely/blank_line_around_class_body

Ensure that a class body contains one blank line after its definition and before its end:

--- Original
+++ New
@@ @@
  <?php
  class Test {
+
      public function func() {
          $obj = new class extends Foo {
+
              public $prop;
+
          }
      }
+
  }

Configuration:

  • apply_to_anonymous_classes - should this fixer be applied to anonymous classes? If it is set to false, than anonymous classes will be fixed to don't have empty lines around body. Default: true.

  • blank_lines_count - adjusts an amount of the blank lines. Default: 1.

Ely/blank_line_before_return

This is extended version of the original blank_line_before_statement fixer. It applies only to return statements and only in cases, when on the current nesting level more than one statements.

--- Original
+++ New
@@ @@
 <?php
 public function foo() {
     $a = 'this';
     $b = 'is';
+
     return "$a $b awesome";
 }

 public function bar() {
     $this->foo();
     return 'okay';
 }

Ely/line_break_after_statements

Ensures that there is one blank line above the next statements: if, switch, for, foreach, while and do-while.

--- Original
+++ New
@@ @@
 <?php
 $a = 123;
 if ($a === 123) {
     // Do something here
 }
+
 $b = [1, 2, 3];
 foreach ($b as $number) {
     if ($number === 3) {
         echo 'it is three!';
     }
 }
+
 $c = 'next statement';

Ely/new_with_braces

This is the extended version of the original new_with_braces fixer. It allows you to remove braces around an anonymous class declaration in a case when said class constructor doesn't contain any arguments.

--- Original
+++ New
@@ @@
 <?php
-$a = new Foo;
+$a = new Foo();
-$b = new class() extends Foo {};
+$b = new class extends Foo {};

Configuration:

  • remove_for_anonymous_classes - if its set to true, then braces for anonymous classes without constructor arguments will be removed. Default: false.

Ely/remove_class_name_method_usages (Yii2)

Replaces Yii2 BaseObject::className() usages with native ::class keyword, introduced in PHP 5.5.

--- Original
+++ New
@@ @@
  <?php
  use common\models\User;
  
- $className = User::className();
+ $className = User::class;