函数文档

wp_insert_category()

💡 云策文档标注

概述

wp_insert_category() 函数用于更新现有分类或创建新分类,是 WordPress 分类管理的核心函数。它接受一个参数数组来定义分类属性,并返回分类 ID 或 WP_Error 对象。

关键要点

  • 函数功能:通过 $catarr 参数数组更新或创建分类,$cat_ID 非零时更新,为零时创建。
  • 参数说明:$catarr 包含 cat_ID、taxonomy、cat_name、category_description、category_nicename、category_parent 等键,其中 category_nicename 设置 slug。
  • 返回值:成功时返回新分类或更新分类的 ID,失败时根据 $wp_error 参数返回 0 或 WP_Error。
  • 相关函数:wp_create_category() 是简化版本,wp_update_category() 是其别名。

代码示例

//Define the category
$wpdocs_cat = array('cat_name' => 'Wpdocs Category', 'category_description' => 'A Cool Category', 'category_nicename' => 'category-slug', 'category_parent' => '');

// Create the category
$wpdocs_cat_id = wp_insert_category($wpdocs_cat);

注意事项

  • cat_name 必须非空,否则函数可能返回 0 或 WP_Error。
  • category_nicename 用于设置 URL 友好的 slug,而非显示名称。
  • taxonomy 参数默认为 'category',从 WordPress 3.0.0 开始支持。

📄 原文内容

Updates an existing Category or creates a new Category.

Parameters

$catarrarrayrequired
Array of arguments for inserting a new category.

  • cat_ID int
    Category ID. A non-zero value updates an existing category.
    Default 0.
  • taxonomy string
    Taxonomy slug. Default 'category'.
  • cat_name string
    Category name. Default empty.
  • category_description string
    Category description. Default empty.
  • category_nicename string
    Category nice (display) name. Default empty.
  • category_parent int|string
    Category parent ID. Default empty.

$wp_errorbooloptional

Default:false

Return

int|WP_Error The ID number of the new or updated Category on success. Zero or a WP_Error on failure, depending on param $wp_error.

More Information

Not all possible members of the $catarr array are listed here.

The value of category_nicename will set the slug. (In WordPress terminology, a “nice” name is one that is sanitized for use in places like URLs. It is not meant for displaying to humans, as you might assume.)

See wp_create_category() for a simpler version which takes just a string instead of an array

Source

function wp_insert_category( $catarr, $wp_error = false ) {
	$cat_defaults = array(
		'cat_ID'               => 0,
		'taxonomy'             => 'category',
		'cat_name'             => '',
		'category_description' => '',
		'category_nicename'    => '',
		'category_parent'      => '',
	);
	$catarr       = wp_parse_args( $catarr, $cat_defaults );

	if ( '' === trim( $catarr['cat_name'] ) ) {
		if ( ! $wp_error ) {
			return 0;
		} else {
			return new WP_Error( 'cat_name', __( 'You did not enter a category name.' ) );
		}
	}

	$catarr['cat_ID'] = (int) $catarr['cat_ID'];

	// Are we updating or creating?
	$update = ! empty( $catarr['cat_ID'] );

	$name        = $catarr['cat_name'];
	$description = $catarr['category_description'];
	$slug        = $catarr['category_nicename'];
	$parent      = (int) $catarr['category_parent'];
	if ( $parent < 0 ) {
		$parent = 0;
	}

	if ( empty( $parent )
		|| ! term_exists( $parent, $catarr['taxonomy'] )
		|| ( $catarr['cat_ID'] && term_is_ancestor_of( $catarr['cat_ID'], $parent, $catarr['taxonomy'] ) ) ) {
		$parent = 0;
	}

	$args = compact( 'name', 'slug', 'parent', 'description' );

	if ( $update ) {
		$catarr['cat_ID'] = wp_update_term( $catarr['cat_ID'], $catarr['taxonomy'], $args );
	} else {
		$catarr['cat_ID'] = wp_insert_term( $catarr['cat_name'], $catarr['taxonomy'], $args );
	}

	if ( is_wp_error( $catarr['cat_ID'] ) ) {
		if ( $wp_error ) {
			return $catarr['cat_ID'];
		} else {
			return 0;
		}
	}
	return $catarr['cat_ID']['term_id'];
}

Changelog

Version Description
3.0.0 The 'taxonomy' argument was added.
2.5.0 $wp_error parameter was added.
2.0.0 Introduced.

User Contributed Notes