ThinkPHP之A方法实例讲解
这篇文章主要介绍了ThinkPHP的A方法,需要的朋友可以参考下
ThinkPHP的A方法用于在内部实例化控制器,其调用格式为:
A('[项目://][分组/]模块','控制器层名称')
最简单的用法:
$User = A('User');
表示实例化当前项目的UserAction控制器(这个控制器对应的文件位于Lib/Action/UserAction.class.php),如果采用了分组模式,并且要实例化另外一个Admin分组的控制器可以用:
$User = A('Admin/User');
也支持跨项目实例化(项目的目录要保持同级)
$User = A('Admin://User');
表示实例化Admin项目下面的UserAction控制器
ThinkPHP的3.1版本增加了分层控制器的支持,所以还可以用A方法实例化其他的控制器,例如:
$User = A('User','Event);
实例化UserEvent控制器(对应的文件位于Lib/Event/UserEvent.class.php)。
实例化控制器后,就可以调用该控制器中的方法,不过需要注意的情况是,在跨项目调用的情况下,如果你的操作方法 有针对当前控制器的特殊变量操作,会有一些未知的问题,所以,,一般来说,官方建议需要公共调用的控制器层单独开发,不要有太多的依赖关系。

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