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Error Identifier: phpstanApi.phpstanNamespace

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);

namespace PHPStan\Custom;

class MyType
{
}

Why is it reported? #

A third-party package declares classes in the PHPStan\ namespace. This namespace is reserved for PHPStan itself. Declaring classes in this namespace from outside the phpstan/* packages can cause conflicts and is not covered by the backward compatibility promise.

How to fix it #

Move the class to your own namespace:

-namespace PHPStan\Custom;
+namespace MyVendor\PHPStanExtension;

 class MyType
 {
 }

Learn more: Backward Compatibility Promise

How to ignore this error #

You can use the identifier phpstanApi.phpstanNamespace to ignore this error using a comment:

// @phpstan-ignore phpstanApi.phpstanNamespace
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: phpstanApi.phpstanNamespace

Rules that report this error #

• PHPStan\Rules\Api\PhpStanNamespaceIn3rdPartyPackageRule [1]

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