thinkphp区间查询、统计查询与SQL直接查询实例分析
这篇文章主要介绍了thinkphp区间查询、统计查询与SQL直接查询,以实例形式较为详细的分析了ThinkPHP比较常用的查询技巧,非常具有实用价值,需要的朋友可以参考下
本文实例讲述了thinkphp区间查询、统计查询与SQL直接查询。分享给大家供大家参考。具体方法如下:
一、区间查询:
复制代码 代码如下:
$data['id']=array(array('gt',4),array('lt',10));//默认关系是(and)并且的关系
//SELECT * FROM `tp_user` WHERE ( (`id` > 4) AND (`id`
$data['id']=array(array('gt',4),array('lt',10),'or') //关系就是(or)或者的关系
$data['name']=array(array('like','%2%'),array('like','% %'),'gege','or');
数组中可以加入多个数组,如果没有or,,默认是and关系
二、统计查询:
count //获取个数
max //获取最大数
min //获取最小数
avg //获取平均数
sum //获取总和
复制代码 代码如下:
$m=M('User');
$arr=$m->count();//得到用户总数
$arr=$m->where("username='gege'")->count(); //放置字符串
$m=M('User');
$data['username']='gege';//放置数组
$c=$m->where($data)->count(); //数组操作会比较规范
三、SQL直接查询,非常灵活可以进行更多的操作。
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
复制代码 代码如下:
$m=M();
$result=$m->query("select * from tp_user where id >50");
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
复制代码 代码如下:
$m=M();
$result=$m->execute("insert into tp_user(`username`) values('ztz3')");
var_dump($result);
希望本文所述对大家的ThinkPHP框架程序设计有所帮助。

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