Frameworks like Laravel, Symfony, and CodeIgniter can speed up development and provide useful functions, helping you avoid reinventing the wheel. They also often encourage MVC patterns which can make your code cleaner and more organized.

Using consistent naming conventions improves code readability and maintainability. Whether you prefer snake_case or camelCase, just make sure you use it consistently across your codebase.

Always validate user inputs to protect your website from malicious attacks. Never trust user input without validation and sanitization.

During the development stage, ensure that all errors are reported and addressed. Using 'error_reporting(E_ALL)' can help you identify and correct all warnings and errors that might otherwise be overlooked.

Using object-oriented programming principles can make your code more modular, easier to test, and more straightforward to maintain. It also allows for better code reusability.

Make it a habit to comment your code. This helps others understand what your code does, which is particularly important when you work in a team. It also serves as a reminder to your future self about the intent and operation of complex code snippets.

Composer is a tool for dependency management in PHP. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you.

PSRs are coding standards for PHP. Following PSR ensures that your code is consistent, easy to read, and easy to work with for other developers.