new file mode 100644

@@ -0,0 +1,42 @@

+<?php

+

+namespace GuzzleHttp\Handler;

+

+use GuzzleHttp\Utils;

+

+/**

+ * @internal

+ */

+final class HeaderProcessor

+{

+    /**

+     * Returns the HTTP version, status code, reason phrase, and headers.

+     *

+     * @param string[] $headers

+     *

+     * @return array{0:string, 1:int, 2:?string, 3:array}

+     *

+     * @throws \RuntimeException

+     */

+    public static function parseHeaders(array $headers): array

+    {

+        if ($headers === []) {

+            throw new \RuntimeException('Expected a non-empty array of header data');

+        }

+

+        $parts = \explode(' ', \array_shift($headers), 3);

+        $version = \explode('/', $parts[0])[1] ?? null;

+

+        if ($version === null) {

+            throw new \RuntimeException('HTTP version missing from header data');

+        }

+

+        $status = $parts[1] ?? null;

+

+        if ($status === null) {

+            throw new \RuntimeException('HTTP status code missing from header data');

+        }

+

+        return [$version, (int) $status, $parts[2] ?? null, Utils::headersFromLines($headers)];

+    }

+}