From 83fc2cbd0d5a24e71c3742e344a2ed466d60ccfc Mon Sep 17 00:00:00 2001
From: Andrew Nicols <andrew@nicols.co.uk>
Date: Wed, 16 Mar 2016 10:42:52 +0800
Subject: [PATCH] MDL-52574 core: Remove ASC/DESC when adding params from sort

---
 lib/accesslib.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/accesslib.php b/lib/accesslib.php
index ae3936d1e78..32362d1e6b7 100644
--- a/lib/accesslib.php
+++ b/lib/accesslib.php
@@ -4213,6 +4213,8 @@ function get_role_users($roleid, context $context, $parent = false, $fields = ''
     $fieldsarray = preg_split('/,\s*/', $fields);
     $addedfields = array();
     foreach ($sortarray as $sortfield) {
+        // Throw away any additional arguments to the sort (e.g. ASC/DESC).
+        list ($sortfield) = explode(' ', $sortfield);
         if (!in_array($sortfield, $fieldsarray)) {
             $fieldsarray[] = $sortfield;
             $addedfields[] = $sortfield;