Use more precise return type for MessageInterface::getHeaders

jtojnar · jtojnar · commit 18d72bf1c88c · 2023-03-08T15:25:21.000+01:00
It is an associative array with a string key (header name).
diff --git a/src/MessageInterface.php b/src/MessageInterface.php
@@ -61,7 +61,7 @@ public function withProtocolVersion($version);
      * While header names are not case-sensitive, getHeaders() will preserve the
      * exact case in which headers were originally specified.
      *
-     * @return string[][] Returns an associative array of the message's headers. Each
+     * @return array<string, string[]> Returns an associative array of the message's headers. Each
      *     key MUST be a header name, and each value MUST be an array of strings
      *     for that header.
      */

Original file line number	Diff line number	Diff line change
`@@ -61,7 +61,7 @@ public function withProtocolVersion($version);`
`61`	`61`	`* While header names are not case-sensitive, getHeaders() will preserve the`
`62`	`62`	`* exact case in which headers were originally specified.`
`63`	`63`	`*`
`64`		`- * @return string[][] Returns an associative array of the message's headers. Each`
	`64`	`+ * @return array<string, string[]> Returns an associative array of the message's headers. Each`
`65`	`65`	`* key MUST be a header name, and each value MUST be an array of strings`
`66`	`66`	`* for that header.`
`67`	`67`	`*/`