Coding standard

All PHP code in phppdf projects is checked with PHP_CodeSniffer using the shared phppdf/coding-standard ruleset.

Installing

composer require --dev phppdf/coding-standard

Running

vendor/bin/phpcs --standard=PhpPdf src tests

Many projects expose this as a Composer script, e.g. composer cs.

What it checks

The ruleset builds on PSR-12 and adds a set of Slevomat Coding Standard sniffs, including:

• Trailing commas in arrays, function calls, and closure use lists.
• A consistent class member order (ClassStructure).
• Required and correctly-spaced parameter and return type hints.
• Alphabetically sorted, fully-qualified use statements with no unused or redundant aliases.
• Consistent spacing around use declarations, namespaces, and doc comments.

Requirements

PHP 8.4+ is required, matching the minimum PHP version supported by phppdf projects.