For example, $ string interpolation and the utf8_encode and utf8_decode functions are now deprecated. PHP 8.2 also includes various deprecations. For example, the new disjunctive normal form (DNF) types allow you to combine union and intersection types while following a strict rule: intersection types must be grouped with brackets when combining union and intersection types. The union and intersection types improved the language greatly. However, in PHP 8.2, you can now use constants in traits. Traits currently only allow the definition of methods and properties, but not constants. Constants in TraitsĪ trait in PHP is a mechanism that allows developers to reuse methods from independent classes that exist in various inheritance hierarchies. Public readonly DateTimeImmutable $last_release_date,įurthermore, depending on your requirements, you can change this engine. So, when you declare a class as readonly, all properties within it are readonly from that point on.įor example, instead of writing this: class LinuxDistros PHP 8.2 introduced a significantly better solution to this problem – readonly classes. So far, so good, but doing this can be time-consuming. Previously, you could create a class and define all the properties as readonly. With readonly classes, PHP 8.2 takes readonly properties much further. PHP 8.1 introduced the readonly properties. One year after the release of the previous PHP 8.1 version, PHP 8.2 is here with another dose of new features. That is why each new version generates great attention and response among web developers.Īlthough minor, the recently released PHP 8.2 version introduces some significant changes to PHP’s journey toward its modernization. Leading CMS platforms such as WordPress, Joomla, Drupal, Magento, and others, which provide the majority of web content on the Internet, are built using PHP. It is a dynamic, general-purpose scripting language that is used in the development of server-side applications. Regarding web applications, PHP is one of the greatest programming languages. After this RFC, the only scope-dependence still left is method visibility: "Foo::bar" may be visible in one scope, but not another.PHP 8.2 was released, bringing read-only classes, new standalone types, a new random extension, and deprecated dynamic properties. Reducing the context-dependence of callables is the secondary goal of this RFC. In practice, this usually also holds for the last two cases, when used in the form of. The method that "self::method" refers to depends on which class the call or callability check is performed from. Nikita explains it very well in the RFC:Īll of these callables are context-dependent. The reason for doing this? It's a step in the right direction towards being able to use callable for typed properties. The list of these kinds of callables is rather short, by the way: "self::method" "parent::method" "static::method" Partially supported callables are callables which can be called using call_user_func($callable), but not by calling $callable() directly. # Deprecate partially supported callables RFCĪnother change, although one with a slightly smaller impact, is that partially supported callables are now deprecated as well. This RFC builds on top of them, and adds syntactic sugar to make all class properties readonly at once. Readonly properties were introduced in PHP 8.1. In this post, we'll go through all features, performance improvements, changes and deprecations one by one.
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