What's new in PHP 8.3
PHP 8.3 was released as scheduled on November 23, introducing numerous new features and improvements since the PHP 8.2 release. We'll go through most important features, performance improvements, changes and deprecations one by one.
PHP 8.3 and subsequent versions now enable the declaration of types for PHP class constants. This guarantees type compatibility for constants when overridden by child classes and interface implementations. Before PHP 8.3, there was no way to enforce type compatibility programmatically.
