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Coding Standards


Generally project is compliment to PSR-2 coding standards. However additional restrictions are applied:

PHPDoc Blocks

  • PHPDoc blocks MUST NOT contain any comments. If method requires explanations think about better naming or refactoring.
  • If method has no unsigned or array typed parameters and not returning untyped or array typed value it MUST NOT have a PHPDoc block.
  • PHPDoc block MUST NOT operate with array type. If method expects an array as an argument or returns an array PHPDoc block MUST have the type of array elements (e.g. string[], MyClass[], etc.) defined. This will not only give developers information about your method but will also allow IDE to assign type to variables during foreach loop iterations, etc. If it is not possible to explicitly specify type of array elements mixed[] annotation MUST be used.
  • Return types mixed, void or type of array elements (e.g. string[], MyClass[], etc.) MUST be specified in PHPDoc block of interface or abstract methods.


Mocking dependencies during unit testing quite often requires disabling original class constructor. While using verbose mode (e.g. MockBuilder with disableOriginalConstructor method) is quite descriptive it is significantly cumbersome increasing visual noise making test less readable. That is one of the most important aspects of a good test. Thus createMock MUST be used instead. In rest of cases (e.g. listing mocked methods) MockBuilder MUST be used.


PHP empty() function is disallowed as risky and error prone. A direct comparison MUST be used instead.


Every repository Lizards & Pumpkins list Lizards & Pumpkins Coding Standards as dev requirement in composer.json. Which means once you run composer install or composer update the latest Lizards & Pumpkins coding standards will be downloaded into vendor/ directory. You don’t need to install PHP_CodeSniffer. The required version will be also downloaded to vendor/.

Additionally composer.json declares “sniff” command so executing composer sniff from the root directory of your project will check your code against Lizards & Pumpkins coding standards.

Note: Lizards & Pumpkins coding standards are extending PSR-2 standards so you don’t need to additionally verify your code against PSR-2 standards.

Optionally you can always run phpcs manually specifying path to Lizards & Pumpkins coding standards (e.g. --standard=./vendor/lizards-and-pumpkins/coding-standards/src/LizardsAndPumpkins). You can also add path to Lizards & Pumpkins coding standards to installed paths of PHP_CodeSniffer once using following command:

./vendor/bin/phpcs --config-set installed_paths ../../lizards-and-pumpkins/coding-standards/src
./vendor/bin/phpcs --config-set show_progress 1
./vendor/bin/phpcs --config-set default_standard LizardsAndPumpkins

After this you can run phpcs and all default settings are applied (show progress, use “LizardsAndPumpkins” rule set)

Note: Even though you may already have phpcs installed in your system due to issues with different versions we encourage you to use a PHP_CodeSniffer executive located at ./vendor/bin/phpcs.

If you are using PHPStorm as an IDE you can also include validation against Lizards & Pumpkins coding standards as a part of PHPStorm inspections. Please refer to this manual for instructions of configuring PHP_CodeSniffer with PHPStorm.

Additionally you can add PHP_CodeSniffer check to as a Git pre-commit hook. In order to do so add phpcs call to your .git/hooks/pre-commit file.

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