2 files changed, 5 insertions, 3 deletions

diff --git a/application/Languages.php b/application/Languages.php
index 357c7524..3eb3388f 100644
--- a/application/Languages.php
+++ b/application/Languages.php
@@ -69,6 +69,8 @@ class Languages
     {
         $this->conf = $conf;
         $confLanguage = $this->conf->get('translation.language', 'auto');
+        // Auto mode or invalid parameter, use the detected language.
+        // If the detected language is invalid, it doesn't matter, it will use English.
         if ($confLanguage === 'auto' || ! $this->isValidLanguage($confLanguage)) {
             $this->language = substr($language, 0, 5);
         } else {
diff --git a/application/config/ConfigPhp.php b/application/config/ConfigPhp.php
index 2f66e8e0..8add8bcd 100644
--- a/application/config/ConfigPhp.php
+++ b/application/config/ConfigPhp.php
@@ -83,10 +83,10 @@ class ConfigPhp implements ConfigIO
 
         $out = array();
         foreach (self::$ROOT_KEYS as $key) {
-            $out[$key] = $GLOBALS[$key];
+            $out[$key] = isset($GLOBALS[$key]) ? $GLOBALS[$key] : '';
         }
-        $out['config'] = $GLOBALS['config'];
-        $out['plugins'] = !empty($GLOBALS['plugins']) ? $GLOBALS['plugins'] : array();
+        $out['config'] = isset($GLOBALS['config']) ? $GLOBALS['config'] : [];
+        $out['plugins'] = isset($GLOBALS['plugins']) ? $GLOBALS['plugins'] : [];
         return $out;
     }