Where 条件表达式格式为：
$map['字段名'] = array('表达式', '操作条件');其中 $map 是一个普通的数组变量，可以根据自己需求而命名。上述格式中的表达式实际是运算符的意义：
| TP运算符 | SQL运算符 | 例子 | 实际查询条件 |
|---|---|---|---|
| eq | = | $map[‘id’] = array(‘eq’,100); | 等效于：$map[‘id’] = 100; |
| neq | != | $map[‘id’] = array(‘neq’,100); | id != 100 |
| gt | > | $map[‘id’] = array(‘gt’,100); | id > 100 |
| egt | >= | $map[‘id’] = array(‘egt’,100); | id >= 100 |
| lt | < | $map[‘id’] = array(‘lt’,100); | id < 100 |
| elt | <= | $map[‘id’] = array(‘elt’,100); | id <= 100 |
| like | like | $map<‘username’> = array(‘like’,’Admin%’); | username like ‘Admin%’ |
| between | between and | $map[‘id’] = array(‘between’,’1,8′); | id BETWEEN 1 AND 8 |
| not between | not between and | $map[‘id’] = array(‘not between’,’1,8′); | id NOT BETWEEN 1 AND 8 |
| in | in | $map[‘id’] = array(‘in’,’1,5,8′); | id in(1,5,8) |
| not in | not in | $map[‘id’] = array(‘not in’,’1,5,8′); | id not in(1,5,8) |
| and（默认） | and | $map[‘id’] = array(array(‘gt’,1),array(‘lt’,10)); | (id > 1) AND (id < 10) |
| or | or | $map[‘id’] = array(array(‘gt’,3),array(‘lt’,10), ‘or’); | (id > 3) OR (id < 10) |
| xor（异或） | xor | 两个输入中只有一个是true时，结果为true，否则为false，例子略。 | 1 xor 1 = 0 |
| exp | 综合表达式 | $map[‘id’] = array(‘exp’,’in(1,3,8)’); | $map[‘id’] = array(‘in’,’1,3,8′); |
补充说明
同 SQL 一样，ThinkPHP运算符不区分大小写，eq 与 EQ 一样。
between、 in 条件支持字符串或者数组，即下面两种写法是等效的：
$map['id'] = array('not in','1,5,8'); $map['id'] = array('not in',array('1','5','8'));
