PHP_CodeSniffer rules (sniffs) to enforce CIG coding conventions

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0.4.0 2022-04-06 17:26 UTC

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Last update: 2022-05-06 17:36:44 UTC


Using CIG PHP coding standards ruleset for PHPCodeSniffer, you can analyse the codebase of your project for PHP compatibility with other _itcig projects.

What's in this repo ?

A ruleset for PHPCodeSniffer to check for PHP compatibility and standards across all _itcig PHP projects.

This WordPress specific ruleset prevents false positives from the PHPCompatibility standard by excluding back-fills and poly-fills which are provided by WordPress.


These will all be installed automatically by this ruleset so you do not need to include them explicitly.

Installation instructions

The only supported installation method is via Composer.

If you already have a Composer PHP_CodeSniffer plugin installed, run:

composer require --dev itcig/php-coding-standards:"*"
composer install

Next, run:

vendor/bin/phpcs -i

If all went well, you will now see that the CIG, CIG-Docs, CIG-Wordpress, CIG-Core, PHPCompatibility, PHPCompatibilityWP and some more PHPCompatibility standards are installed for PHP_CodeSniffer.

How to use

Now you can use the following command to inspect your code:

./vendor/bin/phpcs -p . --standard=CIG

By default, you will only receive notifications about formatting and deprecated and/or removed PHP features.

To get the most out of the CIG coding and PHPCompatibility standards, you should specify a testVersion to check against. That will enable the checks for both deprecated/removed PHP features as well as the detection of code using new PHP features.

If you want to enforce the minimum PHP requirement, either add --runtime-set testVersion 7.2- to your command-line command or add <config name="testVersion" value="7.2-"/> to your custom ruleset.

For example:

# For a project which should be compatible with PHP 7.2 and higher:
./vendor/bin/phpcs -p . --standard=CIG --runtime-set testVersion 7.2-

For more detailed information about setting the testVersion, see the README of the generic PHPCompatibility standard.

Testing PHP files only

By default PHP_CodeSniffer will analyse PHP, JavaScript and CSS files. As the PHPCompatibility sniffs only target PHP code, you can make the run slightly faster by telling PHP_CodeSniffer to only check PHP files, like so:

./vendor/bin/phpcs -p . --standard=CIG --extensions=php --runtime-set testVersion 7.2-