ConstantArrayType: fix returned ConstantArrayTypeAndMethod

[janedbal]

With this, we can recognize those cases:

class Parnt
{
	public function __construct()
	{
		array_map([self::class, 'method1'], [1]); // calls Parnt::method1
		array_map([$this, 'method1'], [1]); // calls Child::method1
	}

	public function method1(): void {
	    echo 'parent';
	}
	
}

class Child extends Parnt
{
	public function __construct()
	{
		parent::__construct();
	}

	public function method1(): void {
	    echo 'child';
	}
	
}

new Child();

[staabm]

Is missing a test

[janedbal]

I'm not sure if there is any native functionality to test against. I need this function for proper dead-code analysis.

[ondrejmirtes]

If nothing else is possible then we need a unit test in ConstantArrayTypeTest. Make sure to initialize $this->createReflectionProvider() so that the Type works properly.

[janedbal]

Without the fix, this is still just ObjectType here.

[janedbal]

Added a test and rebased on top of 2.0.x

[ondrejmirtes]

Thank you.

[ondrejmirtes]

I'm sorry, had to revert this. There are regressions (could be seen in the issue bot):

• Private static function is detected as inaccesible / unused when referenced via array call syntax in constant phpstan#11859
• Array reduce not understanding callback return with generics phpstan#8071