thinkphp的CURD和查询方式介绍

$m=M('User');

select

$m->select();//获取所有数据，以数组形式返回

find

$m->find($id);//获取单条数据

getField(字段名)//获取一个具体的字段值

$arr=$m->where('id=2')->getField('username');

$m=M('User');

$m->字段名=值

$m->add();

$m->delete(2);               //删除id为2的数据

$m->where('id=2')->delete(); //与上面效果相同，也是删除id为2的数据

$data['id']=1;

$data['username']='ztz2';

$m->save($data);            

$data['username']='gege';

$arr=$m->where($data)->find();

$data['username']='gege';

$data['_logic']='or';

$arr=$m->where($data)->select();

$arr=$m->where($data)->select();

NOTLIKE

$data['username']=array('notlike','%ge%'); //notlike中间没有空格

    $arr=$m->where($data)->select();

$arr=$m->where($data)->select();

BETWEEN

$data['id']=array('between',array(5,7));

$arr=$m->where($data)->select();

//SELECT * FROM `tp_user` WHERE ( (`id` BETWEEN 5 AND 7 ) )

$data['id']=array('not between',array(5,7));//注意，not 和 between中间一定要有空格

$arr=$m->where($data)->select();

IN

$data['id']=array('in',array(4,6,7));

$arr=$m->where($data)->select();

//SELECT * FROM `tp_user` WHERE ( `id` IN (4,6,7) )

$data['id']=array('not in',array(4,6,7));

$arr=$m->where($data)->select();

//SELECT * FROM `tp_user` WHERE ( `id` NOT IN (4,6,7) )

//SELECT * FROM `tp_user` WHERE ( (`id` > 4) AND (`id` < 10) )

$data['id']=array(array('gt',4),array('lt',10),'or') //关系就是or的关系

$data['name']=array(array('like','%2%'),array('like','%五%'),'gege','or');

$result=$m->query("select *  from t_user where id >50");

var_dump($result);

$result=$m->execute("insert into t_user(`username`) values('ztz3')");

var_dump($result);