PHP 8.2 introduces read-only classes

A main update to the stalwart scripting language for internet development, PHP 8.2 has arrived with functionality, syntax, and style security advancements along with new capabilities these kinds of as browse-only courses and stand-by yourself forms.

PHP 8.2 was printed December 8 and can be accessed from php.internet.

Guidance for examine-only courses in PHP 8.2 suggests that a class marked with the readonly modifier will mark all instance qualities of the class as study-only and prevent the creation of dynamic properties. Marking readonly lessons with the AllowDynamicProperties attribute triggers a compile error.

The addition of null, untrue, and legitimate as stand-alone varieties in PHP 8.2 is described as a “programming improvement.” The null sort corresponds to PHP’s device variety (the variety that retains a single value) though phony and legitimate are literal forms of variety bool. These alterations advertise kind procedure completeness and provide a variety of edge situations.

In other improvements in PHP 8.2:

• Disjunctive usual sort (DNF) varieties empower the mixture of union and intersection varieties, subsequent a strict rule that states when combining union and intersection forms, intersection forms need to be grouped with brackets.
• A “random” extension delivers an item-oriented API to random variety generation.
• The generation of dynamic homes has been deprecated, to assist stay away from problems and typos, until the course opts in by applying the AllowDynamicProperties attribute stdclass will allow dynamic attributes.
• New classes, interfaces, and features are showcased, these types of as a msqli_execute_query purpose and a SensitiveParameter attribute.
• Constants now can be outlined in qualities.
• The $ string interpolation has been deprecated.

PHP 8.1, which showcased new capabilities about enums, syntax, and study-only houses, arrived in November 2021. It was followed by quite a few issue releases.