PHP5和类继承问题 [英] PHP5 and class inheritance question

问题描述

我有什么可能是一个bug，或者可能是误解了如何通过

引用和类继承在PHP中工作。因为我是PHP的新手，所以我希望有一点外面的帮助来解释这个问题吧

这个！

（代码缩写为清晰）


我有一个父类，DetailCollection，带有子类

KeycodeTracker：


class DetailCollection {

private $ aODetails;

private function setDetail（& $ oDetail，$ bEcho = false）{

$ this-> aODetails [] = $ oDetail;

if（$ bEcho）{echo（count（" DetCol"。$ this-> aODetails。"< BR> ;"））; }

}

}


类KeycodeTracker扩展DetailCollection {

私函数setDetail（& $ oDetail）{

DetailCollection :: setDetail（$ oDetail，true）;

echo（count（" KeyTrk"。$ this-> aODetails。"< ; BR>"））;

}

}


DetailCollection有一个名为setDetail的方法，它接受一个对象

通过引用传递并将其存储在数组中。这在

另一个覆盖DetailCollection的setDetail的子类中工作正常，但是

KeycodeTracker使用对原始类的调用而不起作用 -

$ this-> aODetails中没有元素。


这与通过引用覆盖传递有什么关系

方法办法？或者我只是我自己新手的受害者？


谢谢你偷看！

泰勒

I have what may be a bug, or may be a misunderstanding on how pass by
reference and class inheritance works in PHP. Since I''m relatively
new to PHP, I''m hoping for a little outside help to shed some light on
this!

(code abbreviated for clarity)

I have a parent class, DetailCollection, with a child class
KeycodeTracker:

class DetailCollection{
private $aODetails;
private function setDetail(&$oDetail, $bEcho=false) {
$this->aODetails[] =$oDetail;
if($bEcho) { echo(count("DetCol".$this->aODetails."<BR>")); }
}
}

class KeycodeTracker extends DetailCollection{
private function setDetail(&$oDetail) {
DetailCollection::setDetail($oDetail, true);
echo(count("KeyTrk".$this->aODetails."<BR>"));
}
}

DetailCollection has a method called setDetail, which takes an object
passed by reference and stashes it in an array. This works fine in
another child class that overrides DetailCollection''s setDetail, but
KeycodeTracker uses a call to the original class and does not work -
there are no elements in $this->aODetails.

Does this have anything to do with overriding a pass by reference
method in some way? Or am I just a victim of my own newbieness here?

Thanks for taking a peek!
Tyler

推荐答案

aODetails;

私人函数setDetail（&

aODetails;
private function setDetail(&

oDetail，

bEcho = false）{

bEcho=false) {

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