Shlink coding standard

This repository provides a PHP_CodeSniffer ruleset with the rules used by shlink PHP projects.

Usage

First, install this package using composer:

composer require shlinkio/php-coding-standard --dev

Then, update your phpcs.xml file, adding a rule with the reference to Shlinkio.

<?xml version="1.0"?>
<ruleset name="Coding standard">
    <description>Coding standard</description>

    <!-- display progress -->
    <arg value="p" />
    <arg name="colors" />

    <!-- inherit rules from: -->
    <rule ref="Shlinkio" />

    <!-- [...] -->
</ruleset>

Rules

This ruleset extends PSR-12 rules, and includes:

• Do not allow array long syntax [array(...)].
• Make sure string concatenation operator is surrounded by spaces.
• Do not allow superfluous whitespaces.
• Do not allow unused use statements.
• Require alphabetically ordered use statements.
• Require strict comparisons (=== and !== instead of == and !=).
• Require trailing comma on every element of multi-line arrays.
• Require trailing comma on every element of multi-line function calls.
• Require trailing comma on every element of multi-line function declarations.
• Enforce all global namespace classes, functions and constants to be explicitly imported.
• Require comments with single line written as one-liners [/* @var SomeType **/].
• Make all class constants to have a visibility modifier (public, protected or private).
• Require function arguments with a default null value to be defined as nullable (?string $foo = 'foo').
• Require function arguments to have a native type hint whenever possible.
• Require functions to have a native return type hint whenever possible.
• Require properties to have a native type hint whenever possible.
• Require non-capturing catch when the exception variable is not used.
• Format union types without spaces (foo|bar) and enforcing null at the end for nullables (foo|bar|null).