Error Identifier: property.static
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 Base
{
public int $count = 0;
}
class Child extends Base
{
public static int $count = 0;
}
Why is it reported? #
The child class declares a static property that overrides a non-static (instance) property in the parent class. A property cannot change between static and non-static when overriding, as they represent fundamentally different kinds of storage – static properties are shared across all instances while instance properties are unique to each object.
This is a PHP language-level restriction.
How to fix it #
Match the parent property’s static/non-static declaration:
class Child extends Base
{
- public static int $count = 0;
+ public int $count = 0;
}
If a separate static counter is needed, use a different property name:
class Child extends Base
{
- public static int $count = 0;
+ public static int $totalCount = 0;
}
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\OverridingPropertyRule [1]