Merge pull request #9 from ChristophWurst/fix/lower-null-horde

Fix strlower'ing null
horde · Jun 18, 2022 · 498dc09 · 498dc09
2 parents 8bfb181 + 47b025a
commit 498dc09
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/lib/Horde/String.php b/lib/Horde/String.php
@@ -199,7 +199,11 @@ public static function lower($string, $locale = false, $charset = null)
         if (!isset(self::$_lowers[$string])) {
             $language = setlocale(LC_CTYPE, 0);
             setlocale(LC_CTYPE, 'C');
-            self::$_lowers[$string] = strtolower($string);
+            if ($string === null) {
+                self::$_lowers[$string] = '';
+            } else {
+                self::$_lowers[$string] = strtolower($string);
+            }
             setlocale(LC_CTYPE, $language);
         }