@phpstan-type

The @phpstan-type tag declares a local alias for a complex type, so it can be referenced by name in later @param, @return, and @var tags. It is defined by the static analyzer PHPStan.

Parsing a @phpstan-type tag produces a TypeAliasTag instance, carrying the parsed $alias name and its $type alongside the $name every Tag already provides.

The same TypeAliasTag is produced by @psalm-type and @phan-type, which restate the same concept for their respective tools.

See PHPStan's PHPDoc types.