RFC Tracker

Extends asymmetric visibility, like public private(set), to static properties.

Lets first-class callables like strlen(...) and self::method(...) appear in constant expressions such as attribute arguments.

Adds a fatal_error_backtraces INI setting, on by default, so fatal errors include a stack trace like exceptions do.

Lets you put attributes, including #[\Deprecated], on constants declared with const, and read them with ReflectionConstant::getAttributes().

Adds curl_share_init_persistent(), which returns a locked persistent curl share handle, reused per option set, that can't share cookies.

Adds self-hosted Matomo analytics to PHP.net so the team can see which pages people use, without collecting personal data.

Adds ReflectionProperty::isReadable() and isWritable() so you can check whether a property can be read or written from a given scope.

Lets static closures appear in constant expressions, such as attribute arguments, parameter and property defaults, and constants.

Adds a written policy on when php.net tooling, docs and marketing can use or link to third-party PHP libraries like Composer.

Makes the Directory class final, blocks new Directory(), cloning, serialization and dynamic properties, so it acts like a resource object.