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ThinkPHP CURD方法之table方法详解_php实例

Jun 07, 2016 pm 05:18 PM
thinkphp

ThinkPHP CURD方法的table方法也属于模型类的连贯操作方法之一,该方法主要用于指定操作的数据表

具体用法如下:

一般情况下,操作模型的时候系统能够自动识别当前对应的数据表,所以,使用table方法的情况通常是为了:

1.切换操作的数据表;
2.对多表进行操作;

例如:

$Model->table('think_user')->where('status>1')->select();

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也可以在table方法中指定数据库,例如:

$Model->table('db_name.think_user')->where('status>1')->select();

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需要注意的是table方法不会改变数据库的连接,所以你要确保当前连接的用户有权限操作相应的数据库和数据表。

切换数据表后,系统会自动重新获取切换后的数据表的字段缓存信息。

如果需要对多表进行操作,可以这样使用:

$Model->field('user.name,role.title')->table('think_user user,think_role role')->limit(10)->select();

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为了尽量避免和mysql的关键字冲突,可以建议使用数组方式定义,例如:

$Model->field('user.name,role.title')->table(array('think_user'=>'user','think_role'=>'role'))->limit(10)->select();
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