275℃
1.多条件and查询//*生成Sql语句：SELECT * FROM `user` WHERE ( `name` = '张三' AND `age` = 18 )
db('user')->where('name', '张三')->where('age', 18)->select();2.and和or组合查询//* SELECT * FROM `user` WHERE `name` = '张三' AND ( `age` = 18 OR `money` >= 1000 )
db('user')->where('name', '张三')->where(function ($query){
