Maintaining clean code is much more efficient than maintaining spaghetti code, but writing clean code is not as easy as it sounds. These days there are some tools that help you with writing clean code, such as PHPMD and PHP_CodeSniffer.
PHPMD stands for PHP Mess Detector; this tool will check your code on complexity and how variables are used and will detect some possible bugs. It goes a bit further than the syntax check in your IDE.
PHP_CodeSniffer or PHPCS checks your code on coding standards such as PSR-1 and PSR-2.
We will install PHPMD and PHP_CodeSniffer in our development environment. Make sure you have command-line access to your development environment.