diff --git a/api/verify.php b/api/verify.php
index 92f7767..680a381 100644
--- a/api/verify.php
+++ b/api/verify.php
@@ -5,8 +5,10 @@ namespace SYSTEM\API;
 class verify {
     public static function ALL      ($param)    {return true;}
     public static function UINT     ($param)    {return \is_numeric($param) ? ((int)$param > 0 ? true : false) : false;}
+    public static function UINT0    ($param)    {return \is_numeric($param) ? ((int)$param >= 0 ? true : false) : false;}
     public static function INT      ($param)    {return \is_numeric($param);}
     public static function TIMEUNIX ($param)    {return \is_numeric($param) ? ((int)$param > 0 ? true : false) : false;}
+    public static function DATE     ($param)    {return \strtotime($param);}
     public static function STRING   ($param)    {return \is_string($param);}
     public static function BOOL     ($param)    {return \is_bool($param) || $param == '0' || $param == '1';}
     public static function FLOAT    ($param)    {return \is_float(\floatval($param));}
@@ -14,4 +16,5 @@ class verify {
     public static function ARY      ($param)    {return \is_array($param);}
     public static function LANG     ($param)    {return \SYSTEM\locale::isLang($param);}
     public static function RESULT   ($param)    {return ($param == 'json' || $param == 'msgpack');}
+    
 };
\ No newline at end of file
diff --git a/sai/modules/saimod_sys_locale/saimod_sys_locale.php b/sai/modules/saimod_sys_locale/saimod_sys_locale.php
index 2e315ce..2aebcb3 100644
--- a/sai/modules/saimod_sys_locale/saimod_sys_locale.php
+++ b/sai/modules/saimod_sys_locale/saimod_sys_locale.php
@@ -37,7 +37,8 @@ class saimod_sys_locale extends \SYSTEM\SAI\SaiModule {
             $langhead .= '<th>'.$lang.'</th>'; 
             $languages[] = $lang;
         }         
-                        
+        
+        $tabs = array();
         while($r = $res->next()){            
             $tabs[$r['category']]['tab_id'] = $r['category'];            
             $tabs[$r['category']]['content'] = isset($tabs[$r['category']]['content']) ? $tabs[$r['category']]['content'] : '';