Summary

PHP 8, as you learned, is much stricter in terms of how it defines magic methods. In this chapter, you learned about method signature changes and how to reduce potential bugs by using magic methods properly. You also learned about the method signature changes in both the Reflection and PDO extensions. With the knowledge you've gained in this chapter, you can avoid potential problems when migrating to PHP 8. In addition, you learned about changes in how static methods can be called, as well as a new static return type.

Then, you learned how to make the best use of private methods, as well as how to exert greater control over anonymous classes. You also picked up a few tips on new syntax possibilities and which methods are now obsolete due to changes in the language.

You also learned how to correctly use interfaces and traits to facilitate efficient use of your code. You learned about the new interfaces that were introduced to bring the DOM extension up to the new...