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Homephp教程php手册thinkphp数据查询和遍历数组实例,thinkphp数据查询

thinkphp数据查询和遍历数组实例,thinkphp数据查询

本文实例讲述了thinkphp数据查询和遍历数组的方法。分享给大家供大家参考。具体方法如下:

数据库可以使用DSN方法进行配置:

复制代码 代码如下:

'DB_PREFIX'=>'tp_',  //设置表前缀

'DB_DSN'=>'mysql://root:@localhost:3306/thinkphp',//使用DSN方式配置数据库信息

如果两种方式同时存在,以DSN方式为优先,还有一种简单实用模型的方式.

M() 等效为 new Model();

复制代码 代码如下:

$m=M('User');//表名要大写非常重要

$arr=$m->select();

使用模型的实例可以对数据进行操作,操作的工作一般就是对数据库进行 增删改查 CURD

增 -C Create $m->add()

删 -D Delete $m->delete()

改 -U Update $m->save()

查 -R Read   $m->select()

复制代码 代码如下:

$m=M('User');//表名要大写非常重要 
$arr=$m->select();//得到的是一个数组 
$this->assign('data',$arr);//把一个二维数组分配给data 
$this->display();//调用模板


模板可以遍历数组

复制代码 代码如下:

//vo代表的是当前的数组,因为是二维数组按顺序读取。
---------

我们可以开启调试功能中的page_trace,帮助进行调试用的

1.开启调试功能 在index.php中

复制代码 代码如下:

define('APP_DEBUG',true);//开启调试模式

2.需要设置配置文件config.php(Home/Conf/),开启页面trace

复制代码 代码如下:

'SHOW_PAGE_TRACE'=>true,//开启页面Trace

然后刷新就会在页面右下角出现调试台,可以查看sql、错误、流程、文件等调式信息.

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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