的Yii不返回是從數據庫

Question

空值，這是我的查詢：

SELECT * FROM mytable WHERE `USER` = '1599' AND `id` = '124253' AND `wednesday` IS NULL 

這是PHP代碼：

$check = Test::model()->find("id =:id and user =:user and ".$day." =:day ", array(":id" => $check_lunch_per_day, ":user" => $user, 'day'=> null)); 

闖闖：

$check = Test::model()->find("id =:id and user =:user and ".$day." =:day ", array(":id" => $check_lunch_per_day, ":user" => $user, 'day'=> 'IS NULL')); 

但結果該檢查始終爲空。我該怎麼辦？如果它爲空，我想獲得星期三列值。

Answer 1

這應該工作，

設置:day到IS NULL

$check = Test::model()->find("id =:id and user =:user and ".$day." =:day ", 
array(":id" => $check_lunch_per_day, ":user" => $user, ':day'=> 'IS NULL'));