Defensive code for the case when addon_hooks key does not exist

2018-06-13 21:57:59 +02:00 · 2018-06-13 21:57:59 +02:00 · 7ef81f909f
parent d48f0010dd
commit 7ef81f909f
1 changed files with 6 additions and 1 deletions
--- a/mathjax/mathjax.php
+++ b/mathjax/mathjax.php
@ -27,7 +27,12 @@ function mathjax_uninstall() {
    Addon::unregisterHook('template_vars', 'addon/mathjax/mathjax.php', 'mathjax_template_vars');
 }

-function mathjax_template_vars($a, &$arr) {
+function mathjax_template_vars($a, &$arr)
+{
+    if (!array_key_exists('addon_hooks',$arr['vars']))
+    {
+	$arr['vars']['addon_hooks'] = array();
+    }
    $arr['vars']['addon_hooks'][] = "mathjax";
 }