From 7544e9c3431516c9c1291dd639e0cb40ffd1b41f Mon Sep 17 00:00:00 2001
From: Roman Schmid <bummzack@gmail.com>
Date: Thu, 6 Dec 2018 18:05:42 +0100
Subject: [PATCH] Fix deprecated usage of `create_function`

---
 code/cart/ShoppingCart.php | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/code/cart/ShoppingCart.php b/code/cart/ShoppingCart.php
index 454e4f466..2906f941c 100644
--- a/code/cart/ShoppingCart.php
+++ b/code/cart/ShoppingCart.php
@@ -569,10 +569,9 @@ protected static function build_url($action, $buyable, $params = array())
     protected static function params_to_get_string(array $array)
     {
         if ($array && count($array) > 0) {
-            array_walk($array, create_function('&$v,$k', '$v = $k."=".$v ;'));
-            return "?" . implode("&", $array);
+            return '?' . http_build_query($array);
         }
-        return "";
+        return '';
     }
 
     /**