diff --git a/core/includes/common.inc b/core/includes/common.inc
index bffacfa..793e2bc 100644
--- a/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -443,7 +443,7 @@ function drupal_get_feeds($delimiter = "\n") {
 function drupal_get_query_parameters(array $query = NULL, array $exclude = array(), $parent = '') {
   // Set defaults, if none given.
   if (!isset($query)) {
-    $query = $_GET;
+    $query = Drupal::request()->query->all();
   }
   // If $exclude is empty, there is nothing to filter.
   if (empty($exclude)) {
@@ -525,9 +525,9 @@ function drupal_get_destination() {
   if (isset($destination)) {
     return $destination;
   }
-
-  if (isset($_GET['destination'])) {
-    $destination = array('destination' => $_GET['destination']);
+  $request = Drupal::request();
+  if ($request->query->has('destination')) {
+    $destination = array('destination' => $request->query->get('destination'));
   }
   else {
     $path = current_path();
@@ -4875,7 +4875,7 @@ function show(&$element) {
  * @see drupal_render_cache_set()
  */
 function drupal_render_cache_get($elements) {
-  if (!in_array($_SERVER['REQUEST_METHOD'], array('GET', 'HEAD')) || !$cid = drupal_render_cid_create($elements)) {
+  if (!Drupal::request()->isMethodSafe() || !$cid = drupal_render_cid_create($elements)) {
     return FALSE;
   }
   $bin = isset($elements['#cache']['bin']) ? $elements['#cache']['bin'] : 'cache';
@@ -4907,7 +4907,7 @@ function drupal_render_cache_get($elements) {
  */
 function drupal_render_cache_set(&$markup, $elements) {
   // Create the cache ID for the element.
-  if (!in_array($_SERVER['REQUEST_METHOD'], array('GET', 'HEAD')) || !$cid = drupal_render_cid_create($elements)) {
+  if (!Drupal::request()->isMethodSafe() || !$cid = drupal_render_cid_create($elements)) {
     return FALSE;
   }