Parameter #1 $class … expects class-string<mixed>, string given.

[leofeyer]

Hi folks, does anyone of you happen to know if the error in https://phpstan.org/r/2052a2a9-0f12-4726-b7c8-1241a71f53fb can be solved using generics or some other PHPStan method?

<?php declare(strict_types = 1);

class User
{
	public function getName(): string
	{
		return 'John';
	}
}

class HelloWorld
{
	/**
	 * @template T
	 * @param class-string<T> $class
	 * @return T
	 */
	public function foo(string $class)
	{
		return new $class();
	}
}

class Foo
{
	public static function getClass(): string
	{
		return User::class;
	}
}

[canvural]

Hi,

For this example adding /** @return class-string<User> */ to the getClass works: https://phpstan.org/r/7250f57e-96dc-4905-85df-eccd245265fd

[leofeyer]

Nice! Thank you very much @canvural. 🎉