在PHP我怎么能访问＆QUOT;：私人和QU​​OT;阵列中的一个对象？ [英] In PHP how can I access a ":private" array in an object?

问题描述

直到在 WP_Admin_Bar对象周围3.3beta1项可以使用这种类型的语法的访问，例如改变的CSS类的现有的菜单项中的一个的：

Up until around 3.3beta1 items in the WP_Admin_Bar Object could be accessed using this type of syntax, for example to change the CSS class of one of the existing menu items:

$wp_admin_bar->menu->{'wp-logo'}['meta']['class'] = 'new-class';

在运行时的print_r（$ wp_admin_bar）输出看起来是这样的：

WP_Admin_Bar Object
(
    [menu] => stdClass Object
        (
            [my-account] => Array
                (

不过，各地的版本 3.3beta2 更改菜单项的CSS类不再起作用上述语法，并从 print_r的输出（$ wp_admin_bar ）揭示了一个不同的结构，该对象：

However, around version 3.3beta2 the above syntax for changing a menu item's CSS class no longer works, and the output from print_r($wp_admin_bar) reveals a different structure for that object:

WP_Admin_Bar Object
(
    [nodes:WP_Admin_Bar:private] => Array
        (
            [my-account] => stdClass Object
                (
                    [id] => my-account

                )

我知道这个词preSS可能不希望我的菜单摆弄这样的，如果有这样做更规范的方式，我喜欢使用它，但据我所知，只有两个可用的功能来修改管理栏， add_menu_item 和 remove_menu_item ，而这些不给灵活地做事像改变现有的菜单项的属性。

I realize that Wordpress may not want me fiddling with the menus this way, and if there was a more standardized way to do this I would love to use it, but as far as I know there are only two functions that are available to modify the admin bar, add_menu_item and remove_menu_item, and these do not give the flexibility to do things like changing the attributes of existing menu items.

要确认，我看着 WP-包括/类可湿性粉剂管理员-bar.php 很显然，字preSS已经改变了他们的定义方式变量。

To confirm, I looked at wp-includes/class-wp-admin-bar.php it is clear that Wordpress has changed the way they define the variables.

老班

class WP_Admin_Bar {
    var $menu;
    var $proto = 'http://';
    var $user;

新的类

class WP_Admin_Bar {
    private $nodes = array();
    private $root = array();

    public $proto = 'http://';
    public $user;

所以我的问题是，如果我有机会获得全球$ wp_admin_bar 的对象，是有我的方式，我可以访问节点内的对象：WP_Admin_Bar ：私人？如果没有，有另一种方式来获得这些对象，如创建一个扩展 WP_Admin_Bar 类的新类，然后从那里访问的对象？

So my question is if I have access to the global $wp_admin_bar object, is there I way I can access the objects inside nodes:WP_Admin_Bar:private? And if not, is there another way to get to these objects, such as creating a new class that extends the WP_Admin_Bar class and then accessing the objects from there?

PS：我试图克服这一挑战不改变核心词preSS文件...

ps: I'm trying to overcome this challenge without changing the core Wordpress files...

链接到文件中：<一href=\"http://phpxref.ftwr.co.uk/word$p$pss/nav.html?wp-includes/class-wp-admin-bar.php.source.html\">http://phpxref.ftwr.co.uk/word$p$pss/nav.html?wp-includes/class-wp-admin-bar.php.source.html

推荐答案

将其更改为受保护的成员变量和扩展类。

Change them to protected member variables and extend the class.

谁写私人成员的类有效地作出类最终。这正好说明你应该总是写你的成员保护，除非有一个非常，非常好的理由不这样做。

Whoever wrote the class with private members effectively made the class "final". Which goes to show that you should always write your members as protected, unless there's a really, REALLY good reason to do otherwise.

希望帮助...

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