构造可以返回某些东西吗？ [英] Is it ok for a construct to return something?

问题描述

情况：

我有一个处理HTML表单，清理字段并验证的表单类。

I have a form class which handles HTML forms, cleans up fields and validates.

我正在考虑为不同的表单字段创建单独的类，例如：文本/文件/选择/等。

I'm thinking about creating separate classes for the different form fields, e.g.: text / file / select / etc.

我正在考虑使用此方法类似于以下内容：

The way I'm considering to use this is something like the following:

$form = new Form();
$form->element['fieldname'] = new HtmlTextField('length'=>3);

然而，有人在SO告诉我，类构造永远都不会返回任何东西。

However someone here on SO told me once that a class construct should never return anything.

在上述情况下，它将返回表单字段。

In the above case it would return the form field.

__ construct（ ）永远不应该返回任何东西？

Is it correct that a __construct() should never return anything?

推荐答案

更是如此：返回的任何内容都将被丢弃，并且被调用对象的新实例就是返回值。

Even more so: whatever you return is discarded, and a new instance of the called object is just the return.

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