property.abstractPrivate

Code example

<?php declare(strict_types = 1);

abstract class Foo
{
	abstract private int $value { get; }
}

Why is it reported?

PHP does not allow a property to be both abstract and private. An abstract property requires subclasses to provide an implementation, but private properties are not visible to subclasses. Combining the two modifiers is contradictory and results in a compile-time error in PHP 8.4+.

How to fix it

Change the visibility to protected or public so that subclasses can implement the abstract hook:

 <?php declare(strict_types = 1);

 abstract class Foo
 {
-	abstract private int $value { get; }
+	abstract protected int $value { get; }
 }