bug #62267 [Config] Use the empty string instead of null as an array offset (santysisi)

GromNaN · GromNaN · commit 0868b6734762 · 2025-11-01T22:27:54.000+01:00
This PR was merged into the 6.4 branch. Discussion ---------- [Config] Use the empty string instead of null as an array offset | Q | A | ------------- | --- | Branch? | 6.4 | Bug fix? | no | New feature? | no | Deprecations? | no | Issues | - | License | MIT For reference #61662 [Deprecation in CI](https://github.com/symfony/symfony/actions/runs/19001446632/job/54268718284?pr=62266#step:8:3293) <img width="854" height="312" alt="Screenshot from 2025-11-01 16-53-54" src="https://github.com/user-attachments/assets/946e5fa5-8300-40b3-b443-080119700e6f" /> Commits ------- e7ec787 [Config] Use the empty string instead of null as an array offset
diff --git a/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php b/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php
@@ -249,6 +249,6 @@ private function getPrototypeChildren(PrototypedArrayNode $node): array
         }
         $keyNode->setInfo($info);
 
-        return [$key => $keyNode];
+        return [$key ?? '' => $keyNode];
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -249,6 +249,6 @@ private function getPrototypeChildren(PrototypedArrayNode $node): array`
`249`	`249`	`}`
`250`	`250`	`$keyNode->setInfo($info);`
`251`	`251`
`252`		`- return [$key => $keyNode];`
	`252`	`+ return [$key ?? '' => $keyNode];`
`253`	`253`	`}`
`254`	`254`	`}`