From 5c13a849b3ab5da01b6bbb068a76fd11418b5493 Mon Sep 17 00:00:00 2001
From: Edmund Farrow <edmund.farrow@ed.ac.uk>
Date: Mon, 8 Jul 2024 13:46:34 +0100
Subject: [PATCH] iss1217 - Fix mathjax url for PHP 8.2

---
 vle_specific.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vle_specific.php b/vle_specific.php
index fbd4e7ff2..d62e81721 100644
--- a/vle_specific.php
+++ b/vle_specific.php
@@ -204,7 +204,7 @@ function stack_get_mathjax_url(): string {
             $urlstring = substr($mathjaxconfigurl, 0, $questionpos);
             parse_str($querystring, $queryparams);
             $queryparams = array_merge(['config' => 'TeX-AMS-MML_HTMLorMML'], $queryparams);
-            $querystring = http_build_query($queryparams, null, '&', PHP_QUERY_RFC3986);
+            $querystring = http_build_query($queryparams, '', '&', PHP_QUERY_RFC3986);
             $url = $urlstring . '?' . $querystring;
         } else {
             $url = $mathjaxconfigurl . '?config=TeX-AMS-MML_HTMLorMML';
-- 
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