Error Identifier: outOfClass.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);

$value = static::FOO;

Why is it reported? #

The static keyword is being used to access a class constant (or in a class-name context) outside of a class scope. The static keyword in this context refers to the class the method was called on (late static binding), but it is only meaningful inside a class method. Using it outside of a class results in a fatal error at runtime.

How to fix it #

Use the actual class name instead of static, or move the code inside a class method.

 <?php declare(strict_types = 1);
 
-$value = static::FOO;
+$value = MyClass::FOO;

Or move the code inside a class:

 <?php declare(strict_types = 1);
 
 class MyClass
 {
 	public const FOO = 'bar';

 	public function getValue(): string
 	{
 		return static::FOO;
 	}
 }

How to ignore this error #

You can use the identifier outOfClass.static to ignore this error using a comment:

// @phpstan-ignore outOfClass.static
codeThatProducesTheError();

You can also use only the identifier key to ignore all errors of the same type in your configuration file in the ignoreErrors parameter:

parameters:
	ignoreErrors:
		-
			identifier: outOfClass.static

Rules that report this error #

PHPStan\Rules\Classes\ClassConstantRule [1]
PHPStan\Rules\Classes\ExistingClassInInstanceOfRule [1]
PHPStan\Rules\Classes\InstantiationRule [1]
PHPStan\Rules\Methods\CallStaticMethodsRule [1]
PHPStan\Rules\Methods\StaticMethodCallableRule [1]
PHPStan\Rules\Properties\AccessStaticPropertiesInAssignRule [1]
PHPStan\Rules\Properties\AccessStaticPropertiesRule [1]

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