Error Identifier: property.final

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);

class User
{
	final public string $name = 'John';
}

Why is it reported? #

The final modifier on properties is a feature introduced in PHP 8.4. When running on an earlier PHP version, this syntax is not supported and will cause an error.

How to fix it #

Upgrade to PHP 8.4 or later to use final properties.

If you cannot upgrade, remove the final modifier from the property:

 <?php declare(strict_types = 1);
 
 class User
 {
-	final public string $name = 'John';
+	public string $name = 'John';
 }

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\PropertyInClassRule [1]

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