在php中获取父类的所有定义的类 [英] Get all defined classes of a parent class in php

问题描述

在包含所有文件后，我需要确定哪些类扩展了父类，因此:

I need to determine, after all files have been included, which classes extend a parent class, so:

class foo{
}
class boo extends foo{
}
class bar extends foo{
}

并且我希望能够获取一个数组，例如:

and I'd like to be able to grab an array like:

array('boo','bar');

推荐答案

如果你需要它，它真的闻起来像糟糕的代码，基类不应该需要知道这一点.

If you need that, it really smells like bad code, the base class shouldn't need to know this.

但是，如果您的定义已被包含(即您不需要包含您可能拥有的类的新文件)，您可以运行:

However, if you definitions have been included (i.e. you don't need to include new files with classes you possibly have), you could run:

$children  = array();
foreach(get_declared_classes() as $class){
    if($class instanceof foo) $children[] = $class;
}

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