staticClassAccess.privateMethod

Code example

<?php declare(strict_types = 1);

class Foo
{
	private static function secret(): void
	{
	}

	public function doFoo(): void
	{
		static::secret();
	}
}

Why is it reported?

A private method is called through static:: in a non-final class. The static:: keyword resolves at runtime to the actual class, which may be a child class. Since private methods are not inherited by child classes, calling a private method through static:: can cause a fatal error if the method is invoked from a child class context.

How to fix it

Use self:: instead of static:: for private method calls:

 <?php declare(strict_types = 1);

 class Foo
 {
 	private static function secret(): void
 	{
 	}

 	public function doFoo(): void
 	{
-		static::secret();
+		self::secret();
 	}
 }

Or make the class final, or make the method protected or public.