修改购物车接口

@@ -201,4 +201,12 @@ function wpjam_array_push($array, $data=null, $key=false){
     }else{  // 没指定 $key 或者找不到，就直接加到末尾
         return array_merge($array, $data);
     }
+}
+
+if (!function_exists('cal_days_in_month'))
+{
+    function cal_days_in_month($calendar, $month, $year)
+    {
+        return date('t', mktime(0, 0, 0, $month, 1, $year));
+    }
 }
\ No newline at end of file

@@ -121,8 +121,8 @@ class Api
             $this->userId   = $user['id'];
         }
         $lang = $this->request->header('lang');
-//        if (empty($lang)) $this->error('缺少lang!');
-        $this->lang = $lang;
+        if (empty($lang)) $this->lang = 'ch';  //$this->error('缺少lang!');
+        else $this->lang = $lang;
         /*if (Config::get('url_domain_deploy')) {
             $domain = Route::rules('domain');
             if (isset($domain['api'])) {