TP中如何用IF

将TP中这个容易忘的知识点记下来以便日后翻阅

　　　　　　$memberField = "ID, NAME, MOBILE, MEMBER_STATUS as status,
IF (MEMBER_STATUS = 10, true, false) member_status, IF(MEMBER_STATUS = 10, '在职', '离职') status_text";