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wordpress函数get_category()用法示例

get_category( int|object $category,  string $output = OBJECT,  string $filter = 'raw' )

Retrieves category data given a category ID or category object.


描述

If you pass the $category parameter an object, which is assumed to be the category row object retrieved the database. It will cache the category data.

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If you pass $category an integer of the category ID, then that category will be retrieved from the database, if it isn’t already cached, and pass it back.

If you look at get_term(), then both types will be passed through several filters and finally sanitized based on the $filter parameter value.

The category will converted to maintain backward compatibility.


参数

$category

(int|object)
(Required)
Category ID or Category row object

$output

(string)
(Optional)
The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which correspond to a WP_Term object, an associative array, or a numeric array, respectively.

Default value: OBJECT

$filter

(string)
(Optional)
Default is raw or no WordPress defined filter will applied.

Default value: ‘raw’


返回值

(object|array|WP_Error|null) Category data in type defined by $output parameter. WP_Error if $category is empty, null if it does not exist.


源代码

File: wp-includes/category.php

function get_category( $category, $output = OBJECT, $filter = 'raw' ) {
	$category = get_term( $category, 'category', $output, $filter );

	if ( is_wp_error( $category ) )
		return $category;

	_make_cat_compat( $category );

	return $category;
}

更新日志

Version 描述
1.5.1 Introduced.

相关函数

Uses

  • wp-includes/category.php:
    _make_cat_compat()
  • wp-includes/taxonomy.php:
    get_term()
  • wp-includes/load.php:
    is_wp_error()

Used By

  • wp-admin/includes/class-wp-press-this.php:
    WP_Press_This::add_category()
  • wp-includes/deprecated.php:
    get_category_children()
  • wp-includes/deprecated.php:
    get_linkcatname()

  1. Skip to note content

    You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note

    Contributed by Bruno Kos

    Perform a check if category with cat ID has any number of posts.

    
    if ( get_category( $id )->category_count > 1 ) {
       //do something
    }
    
  2. Example passing Category ID (integer):

    <?php $category = get_category( 106 ); ?>

    The output of print_r( $category ); would be similar to:

    stdClass Object
    (
    [term_id] => 106
    [name] => Category Name
    [slug] => category-name
    [term_group] => 0
    [term_taxonomy_id] => 108
    [taxonomy] => category
    [描述] => This is the category 描述.
    [parent] => 62
    [count] => 17
    [filter] => raw
    [cat_ID] => 106
    [category_count] => 17
    [category_ 描述] => This is the category 描述.
    [cat_name] => Category Name
    [category_nicename] => category-name
    [category_parent] => 62
    )

    Get current category data on a category template:

    $current_category = get_category( get_query_var( 'cat' ), false );

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