classConstant.nonObject

Code example

<?php declare(strict_types = 1);

function foo(int $value): void
{
	echo $value::FOO;
}

Why is it reported?

The code attempts to access a class constant using the :: operator on a value that is not an object or a class string. Class constants can only be accessed on objects, class names, or class-string types.

In the example above, $value is an int, which does not support class constant access.

How to fix it

Ensure the value used for class constant access is an object or a class-string:

 <?php declare(strict_types = 1);

-function foo(int $value): void
+function foo(Foo $value): void
 {
 	echo $value::FOO;
 }