右边banner

@@ -153,16 +153,18 @@ EOL;
             $banners = $this->view->rightBanners;
             $temp = array();
             $len =  count($banners);
-            if($len >=3)
+            if($len >3 && is_numeric($len)&(!($len&1)))
             {
              //随机选择出两个元素
              $temp=array_rand($banners,2);
              foreach($temp as $val){
                  $data_last[]=$banners[$val];
              }
-//                $temp = array_slice($banners, 0,1);
-//                $pos = rand(1, $len-1);
-//                $banners = array_merge($temp, array_slice($banners, $pos, 2));
+            }
+            if($len >=3 && is_numeric($len)&($len&1)){
+             $temp = array_slice($banners, 0,1);
+             $pos = rand(1, $len-1);
+                $data_last = array_merge($temp, array_slice($banners, $pos, 1));
             }
             foreach($data_last as $banner):
               $res_size = json_decode($banner['res_size'], true);