The document discusses standards for PHP code and tools for enforcing code standards. It recommends adopting a coding standard like PSR2 for consistency, readability, and easier code sharing. It introduces PHPCS for checking code against a standard, PHPCBF for automatically fixing issues, and PHPMD for detecting suboptimal code. It provides examples of running these tools on a codebase and automatically fixing issues found by PHPCS. Finally, it mentions integrating these tools into PHPStorm and creating a Git pre-commit hook to run PHPCS on commits.