Error Identifier: property.abstractFinalHook

Every error reported by PHPStan has an error identifier. Here’s a list of all error identifiers. In PHPStan Pro you can see the error identifier next to each error and filter errors by their identifiers.

Code example #

<?php declare(strict_types = 1);

interface HasName
{
	public string $name {
		final get;
	}
}

Why is it reported? #

A property hook cannot be both abstract and final. In an interface, all hooks without bodies are implicitly abstract. Marking such a hook as final creates a contradiction: the hook must be implemented by a subclass (abstract) but cannot be overridden (final). PHP rejects this at compile time.

How to fix it #

Remove the final modifier from the hook:

 interface HasName
 {
 	public string $name {
-		final get;
+		get;
 	}
 }

Non-ignorable error #

This error cannot be ignored using @phpstan-ignore or the ignoreErrors configuration. Non-ignorable errors indicate code that would cause a crash or a fatal error at runtime, or a fundamental problem in the analysed code that must be addressed.

Rules that report this error #

PHPStan\Rules\Properties\PropertiesInInterfaceRule [1]

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