PHP 8.1: fix deprecation notice #58
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
As of PHP 8.1, PHP will start throwing deprecation warnings along the lines of: ``` Deprecated: Return type of [CLASS]::[METHOD]() should either be compatible with [PHP NATIVE INTERFACE]::[METHOD](): [TYPE], or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice ``` These type of deprecation notices relate to the [Return types for internal methods RFC](https://wiki.php.net/rfc/internal_method_return_types) in PHP 8.1. Basically, as of PHP 8.1, these methods in classes which implement PHP native interfaces are expected to have a return type declared. The return type can be the same as used in PHP itself or a more specific type. This complies with the Liskov principle of covariance, which allows the return type of a child overloaded method to be more specific than that of the parent. The return type for `ArrayAccess::offsetGet()` is supposed to be `mixed`, but as that is a PHP 8.0 type, it cannot yet be added. Ref: https://www.php.net/manual/en/class.arrayaccess.php With that in mind, I've added the annotation instead. The other methods in this class were already declared with the appropriate return type. Note: While attributes are a PHP 8.0 feature only, due to the syntax choice for `#[]`, they will ignored in PHP < 8 and can be safely added.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
As of PHP 8.1, PHP will start throwing deprecation warnings along the lines of:
These type of deprecation notices relate to the Return types for internal methods RFC in PHP 8.1.
Basically, as of PHP 8.1, these methods in classes which implement PHP native interfaces are expected to have a return type declared.
The return type can be the same as used in PHP itself or a more specific type. This complies with the Liskov principle of covariance, which allows the return type of a child overloaded method to be more specific than that of the parent.
The return type for
ArrayAccess::offsetGet()is supposed to bemixed, but as that is a PHP 8.0 type, it cannot yet be added.Ref: https://www.php.net/manual/en/class.arrayaccess.php
With that in mind, I've added the annotation instead.
The other methods in this class were already declared with the appropriate return type.
Note: While attributes are a PHP 8.0 feature only, due to the syntax choice for
#[], they will ignored in PHP < 8 and can be safely added.