What are some recommended tools or libraries, like PEAR, for improving code quality and readability in PHP projects?

One recommended tool for improving code quality and readability in PHP projects is PHP CodeSniffer. PHP CodeSniffer helps ensure that your code adheres to coding standards and best practices, making it easier to read and maintain. By running PHP CodeSniffer on your codebase, you can identify and fix issues such as inconsistent formatting, naming conventions, and coding style.

// Example PHP CodeSniffer command to run on your codebase
phpcs --standard=PSR2 /path/to/your/php/files