Merge pull request #1321 from alexandre-daubois/psr-17-explicit-nullable

Add explicit nullable types to PSR-17

accepted/PSR-17-http-factory-meta.md

@@ -306,3 +306,17 @@ _**Note:** Order descending chronologically._
 - [shadowhand Dependency Inversion and PSR-7 Bodies](http://shadowhand.me/dependency-inversion-and-psr-7-bodies/)
 - [PHP-FIG mailing list thread discussing factories](https://groups.google.com/d/msg/php-fig/G5pgQfQ9fpA/UWeM1gm1CwAJ)
 - [PHP-FIG mailing list thread feedback on proposal](https://groups.google.com/d/msg/php-fig/piRtB2Z-AZs/8UIwY1RtDgAJ)
+
+## 9. Errata
+
+### 9.1 Use of explicit nullable type
+
+Prior to PHP 8.4, it was allowed to declare a type accepting `null` by omitting
+the nullable part of the type if the default value of the property or parameter
+was set to null. This implicit type declaration is now deprecated and all
+types should be declared explicitly.
+
+This change also requires the minimum PHP version required by this PSR to
+be updated to 7.1, as nullable types were introduced in this version. Apart
+from this change, no breaking change is introduced by this update and the
+behavior of the interfaces remains the same.

accepted/PSR-17-http-factory.md

@@ -188,14 +188,17 @@ interface UploadedFileFactoryInterface
      */
     public function createUploadedFile(
         StreamInterface $stream,
-        int $size = null,
+        ?int $size = null,
         int $error = \UPLOAD_ERR_OK,
-        string $clientFilename = null,
-        string $clientMediaType = null
+        ?string $clientFilename = null,
+        ?string $clientMediaType = null
     ): UploadedFileInterface;
 }
 ```
 
+Since [psr/http-factory version 1.1](https://packagist.org/packages/psr/http-factory#1.1.0),
+the above interface has been updated to add explicit nullable types.
+
 ### 2.6 UriFactoryInterface
 
 Has the ability to create URIs for client and server requests.