使用php析构函数适合显示HTML吗？ [英] Is using php destructor appropriate for displaying HTML?

问题描述

如果实现了一个通过构造页面并调用各种方法来为页面构建HTML的类，那么在析构函数中定义该类的显示/回显部分是否合适？

If a class is implemented that builds HTML for a page by constructing it and calling various methods, is it appropriate to define the display/echo part of the class within the destructor?

不是使用显式的 Class：displayHTML（）; 方法，而是使用了 echo $ this-> html 在析构函数中，并且只要您准备显示调用 unset（$ object）; ，它将显示它吗？

Instead of having a explicit Class:displayHTML(); method, having the echo $this->html in the destructor and whenever you are ready to display call unset($object); which would display it?

我知道析构函数可能不是最佳解决方案，但想知道其他人对此有何想法？

I know the destructor probably is not the best place for this but wonder what others thoughts are on this?

推荐答案

这对我来说听起来不可行。未设置不等于回声。这是完全不同的事情。另外，请记住，对象不仅会在取消设置时销毁，而且会在不再被引用和/或脚本终止时销毁。

That doesnt sound feasible to me. unset does not equal echo. It's a fundamentally different thing. Also, keep in mind that objects are not only destroyed on unset but also when they are no longer referenced and/or when the script terminates. That has a lot potential for unwanted side effects.

如果您不想拥有/调用 displayHTML（）或 render（）方法，在 __ toString（）中实现该部分，然后回显实例。

If you dont want to have/call a displayHTML() or render() method, implement that part in __toString() and just echo the instance.

class HTMLSomething
{
    /* ... */
    public function __toString()
    {
        /* create $output */
        return $output;
    }
}
$something = new HTMLSomething;
echo $something;

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