Error Identifier: property.finalPrivate
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 Foo
{
final private int $bar;
}
Why is it reported? #
PHP does not allow a property to be both final and private. The final modifier prevents child classes from overriding a property, but private properties are already invisible to child classes and cannot be overridden. Combining the two modifiers is contradictory and results in a compile-time error in PHP 8.4+.
How to fix it #
Remove one of the conflicting modifiers. If the property should not be visible to child classes, use private without final:
<?php declare(strict_types = 1);
class Foo
{
- final private int $bar;
+ private int $bar;
}
If the property should be visible to child classes but not overridable, use final protected or final public:
<?php declare(strict_types = 1);
class Foo
{
- final private int $bar;
+ final protected int $bar;
}
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]