Use http_get_last_response_headers() instead of $http_response_header with PHP 8.4+

Author: mlocati

bin/import-cldr-data

@@ -173,14 +173,24 @@ class DocumentStorage
     private function fetch($path)
     {
         $url = $this->baseUrl . '/' . ltrim($path, '/');
+        if (defined('PHP_VERSION_ID') && \PHP_VERSION_ID >= 80400) {
+            http_clear_last_response_headers();
+        }
         set_error_handler(function () {}, -1);
         $content = file_get_contents($url, false, $this->context);
         restore_error_handler();
         if ($content === false) {
             $details = '';
-            /** @var array $http_response_header */
-            if (!empty($http_response_header)) {
-                $details = " - {$http_response_header[0]}";
+            if (defined('PHP_VERSION_ID') && \PHP_VERSION_ID >= 80400) {
+                $lastResponseHeaders = http_get_last_response_headers();
+            } elseif (!empty($http_response_header)) {
+                $varName = 'http_response_header';
+                $lastResponseHeaders = ${$varName};
+            } else {
+                $lastResponseHeaders = null;
+            }
+            if (!empty($lastResponseHeaders)) {
+                $details = " - {$lastResponseHeaders[0]}";
             }
             throw new RuntimeException("Failed to download from {$url}{$details}");
         }