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Error Identifier: sealed.deprecatedInterface

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);

/** @deprecated Use NewHandler instead */
interface OldHandler
{
}

/**
 * @phpstan-sealed OldHandler
 */
interface HandlerProvider
{
}

Why is it reported? #

This error is reported by the phpstan-deprecation-rules extension.

The @phpstan-sealed PHPDoc tag references an interface that is marked as @deprecated. The @phpstan-sealed tag restricts which types are allowed to implement or extend the sealed type. Referencing a deprecated interface in this tag creates a dependency on a symbol that is scheduled for removal.

How to fix it #

Replace the deprecated interface with its recommended replacement in the @phpstan-sealed tag:

 <?php declare(strict_types = 1);
 
 /**
- * @phpstan-sealed OldHandler
+ * @phpstan-sealed NewHandler
  */
 interface HandlerProvider
 {
 }

If the containing declaration is itself deprecated, the error will not be reported.

How to ignore this error #

You can use the identifier sealed.deprecatedInterface to ignore this error using a comment:

// @phpstan-ignore sealed.deprecatedInterface
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: sealed.deprecatedInterface

Rules that report this error #

• PHPStan\Rules\Deprecations\RestrictedDeprecatedClassNameUsageExtension [1] phpstan/phpstan-deprecation-rules

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