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Error Identifier: parameter.noParent

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
{
	public function doFoo(parent $value): void
	{
	}
}

Why is it reported? #

The parent type is used in a parameter declaration, but the class does not have a parent class. The parent keyword refers to the parent class in the inheritance hierarchy, and it can only be used in classes that extend another class. Using parent in a class that does not extend anything causes a fatal error at runtime.

How to fix it #

If the class should have a parent, add the extends clause:

-class Foo
+class Foo extends Bar
 {
 	public function doFoo(parent $value): void
 	{
 	}
 }

If parent was used by mistake, replace it with the intended type:

 class Foo
 {
-	public function doFoo(parent $value): void
+	public function doFoo(self $value): void
 	{
 	}
 }

How to ignore this error #

You can use the identifier parameter.noParent to ignore this error using a comment:

// @phpstan-ignore parameter.noParent
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: parameter.noParent

Rules that report this error #

• PHPStan\Rules\Functions\ExistingClassesInArrowFunctionTypehintsRule [1]
• PHPStan\Rules\Functions\ExistingClassesInClosureTypehintsRule [1]
• PHPStan\Rules\Functions\ExistingClassesInTypehintsRule [1]
• PHPStan\Rules\Methods\ExistingClassesInTypehintsRule [1]
• PHPStan\Rules\Properties\ExistingClassesInPropertyHookTypehintsRule [1]

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