deprecation



What's new in PHP 8.3

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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.

What's new in PHP 8.2

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PHP 8.2 has been released on December 8, 2022. We'll go through most important features, performance improvements, changes and deprecations one by one.

Read only properties were introduced in PHP 8.1. Now, PHP 8.2 is adding support to declare the entire class as read only.

If you declare a class as read only, all its properties will automatically inherit the read only feature. Thus, declaring a class read only is the same as declaring every class property as read only.