ThinkPhp学习09

原文:ThinkPhp学习09三、区间查询

$data['id']=array(array('gt',4),array('lt',10));//默认关系是 and 的关系

//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

//2.SELECT * FROM `tp_user` WHERE ( (`id` > 4) AND (`id` < 10)  )
$data['id']=array(array('gt',4),array('lt',10));
//SELECT * FROM `tp_user` WHERE ( (`id` > 4) OR (`id` < 10) )
//$data['id']=array(array('gt',4),array('lt',10),'or');
$arr=$m->where($data)->select();

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

//2.SELECT * FROM `tp_user` WHERE ( (`username` LIKE '%2%') OR (`username` LIKE '%李%') OR (`username` = '李') )
$data['username']=array(array('like','%2%'),array('like','%李%'),'李','or');
$arr=$m->where($data)->select();

四、统计查询

count //获取个数

//2.SELECT COUNT(*) AS tp_count FROM `tp_user` WHERE ( `sex` = 0 )
$data['sex']=0;

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

max //获取最大数

//2.SELECT MAX(id) AS tp_max FROM `tp_user`
echo $m->max('id');

min //获取最小数

//3.SELECT MIN(id) AS tp_min FROM `tp_user`
echo $m->min('id');

avg //获取平均数 、sum //获取总和

//2.SELECT AVG(id) AS tp_avg FROM `tp_user`
echo $m->avg('id');
//3.SELECT SUM(id) AS tp_sum FROM `tp_user` LIMIT 1
echo $m->sum('id');
//var_dump($arr);

五、SQL直接查询

a、query 主要数处理读取数据的 成功返回数据的结果集 失败返回boolean false

//2.select * from tp_user where id >5
$result=$m->query("select *  from tp_user where id >5");
var_dump($result);

b、execute 用于更新个写入操作 成功返回影响行数 失败返回boolean false $m=M(); $result=$m->execute("insert into t_user(`username`) values('ztz3')"); var_dump($result);

//2.insert into tp_user(`username`) values('ztz3')
$result=$m->execute("insert into tp_user(`username`) values('ztz3')");
var_dump($result);