WordPress:Function Reference/get categories

描述

Returns an array of category objects matching the query parameters.

返回与查询参数匹配的类别objects的数组。

Arguments are pretty much the same as wp_list_categories and can be passed as either array or in query syntax.

参数与wp_list_categories非常相像，可以用来作为数组传递，或者在查询语法中传递。<!—返回的数组似乎总是flat (没有嵌套的子类别)但是我还不确定。-->

用法

%%% <?php $categories = get_categories(parameters); ?> %%%

%%% <?php $categories = get_categories(parameters); ?> %%%

例子

默认用法

%%% <?php $defaults = array('type' => 'post', 'child_of' => 0, 'orderby' => 'name', 'order' => 'ASC', 'hide_empty' => true, 'include_last_update_time' => false, 'hierarchical' => 1, 'exclude' => , 'include' => , 'number' => , 'pad_counts' => false);?>%%%

%%% <?php $defaults = array('type' => 'post', 'child_of' => 0, 'orderby' => 'name', 'order' => 'ASC', 'hide_empty' => true, 'include_last_update_time' => false, 'hierarchical' => 1, 'exclude' => , 'include' => , 'number' => , 'pad_counts' => false);?>%%%

下拉列表框

Here's how to create a dropdown box of the subcategories of, say, a category that archives information on past events. This mirrors the example of the dropdown example of wp_get_archives which shows how to create a dropdown box for monthly archives.

下面是创建如，存档有文章记录的类别的子类别的下拉列表框。这反映了 wp_get_archives下面列表的例子， wp_get_archives显示怎样为按月的存档创建下拉列表框。

Suppose the category whose subcategories you want to show is category 10, and that its category "nicename" is "archives".

加入你想要显示的子类别的上级类别是10，而且类别"昵称"是"存档"。

<select name="event-dropdown" onchange='document.location.href=this.options[this.selectedIndex].value;'> 
 <option value=""><?php echo attribute_escape(__('Select Event')); ?></option> 
 <?php 
  $categories=  get_categories('child_of=10'); 
  foreach ($categories as $cat) {
  	$option = '<option value="/category/archives/'.$cat->category_nicename.'">';
	$option .= $cat->cat_name;
	$option .= ' ('.$cat->category_count.')';
	$option .= '</option>';
	echo $option;
  }
 ?>
</select>

<select name="event-dropdown" onchange='document.location.href=this.options[this.selectedIndex].value;'> 
 <option value=""><?php echo attribute_escape(__('Select Event')); ?></option> 
 <?php 
  $categories=  get_categories('child_of=10'); 
  foreach ($categories as $cat) {
  	$option = '<option value="/category/archives/'.$cat->category_nicename.'">';
	$option .= $cat->cat_name;
	$option .= ' ('.$cat->category_count.')';
	$option .= '</option>';
	echo $option;
  }
 ?>
</select>

参数

type (string)

Type of category to retrieve

type (string)

需要返回的类别的类型

• post - default
• link
• post - 默认
• link

child_of (integer)

Only display categories that are children of the category identified by its ID. There is no default for this parameter. If the parameter is used, the hide_empty parameter is set to false.

child_of (integer)

只显示某个类别ID的子类别。这个参数没有默认设置。如果使用了这个参数，hide_empty参数设置为错误的。

orderby (string)

Sort categories alphabetically or by unique category ID. The default is sort by Category ID. Valid values:

orderby (string)

根据字母表属性或者类别ID给类别分类。默认为根据类别 ID分类。有效的参数值：

• ID - default
• name
• ID - 默认
• name

order (string)

Sort order for categories (either ascending or descending). The default is ascending. Valid values:

order (string)

类别的分类顺序（升序或者降序）。默认为升序。有效的参数值：

• asc - default
• desc
• asc - 默认
• desc

hide_empty (boolean)

Toggles the display of categories with no posts. The default is true (hide empty categories). Valid values:

hide_empty (boolean)

Toggles没有文章的类别的显示。默认为正确的（隐藏空类别）。有效的参数值：

• 1 (true) - default
• 0 (false)
• 1 (true) - 默认的
• 0 (false)

include_last_update_time (boolean)

Uncertain what this doesies|the example]].

include_last_update_time (boolean)

不确定what this doesies|the example]]。

• 1 (true)
• 0 (false) -- default
• 1 (true)
• 0 (false) -- 默认

hierarchical (boolean)

Display sub-categories as inner list items (below the parent list item) or inline. The default is true (display sub-categories below the parent list item). Valid values:

hierarchical (boolean)

将子类别显示为内嵌的列表内容（母类别下面）或者内套。默认为正确的（在母列表内容的下面显示子类别）。有效的参数值：

• 1 (true) - default
• 0 (false)
• 1 (true) -默认的
• 0 (false)

exclude (string)

Excludes one or more categories from the list generated by wp_list_categories. This parameter takes a comma-separated list of categories by unique ID, in ascending order.

exclude (string)

从wp_list_categories产生的列表中删除一个或者更多的类别。这个参数有一个用逗号分开的类别ID，以升序排列。

See the example.

请看看例子。

include (string)

Only include certain categories in the list generated by wp_list_categories. This parameter takes a comma-separated list of categories by unique ID, in ascending order. See the example.

include (string)

在wp_list_categories产生的列表中只包含某些类别。这个参数有一个用逗号分开的类别ID的列表，以升序排列。

请看看例子。

• list - default.
• none

number (string)

The number of categories to return

pad_counts (boolean)

Calculates link or post counts by including items from child categories. Valid values:

• 1 (true)
• 0 (false) - default

• list -默认。
• none

number (string)

返回的类别数字

pad_counts (boolean)

包含子类别的内容，技术链接或者文章字数。有效的参数值：

• 1 (true)
• 0 (false) -默认