classConstant.dynamicString

Code example

<?php declare(strict_types = 1);

function doFoo(string $className): void
{
	echo $className::class;
}

Why is it reported?

Accessing ::class on a dynamic string variable is not supported in PHP. While PHP 8.0 introduced $object::class for objects, this does not work for string variables containing class names.

How to fix it

Use the string variable directly, as it already contains the class name:

 <?php declare(strict_types = 1);

 function doFoo(string $className): void
 {
-	echo $className::class;
+	echo $className;
 }