Question

taxonomy_exists( string $taxonomy )

Checks that the taxonomy name exists.

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description

Formerly is_taxonomy(), introduced in 2.3.0.

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参数

$taxonomy

(string) (Required) Name of taxonomy object.

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返回值

(bool) Whether the taxonomy exists.

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源代码

File: wp-includes/taxonomy.php

function taxonomy_exists( $taxonomy ) {
	global $wp_taxonomies;

	return isset( $wp_taxonomies[$taxonomy] );
}

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更新日志

Version	description
3.0.0	Introduced.

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相关函数

Used By

• wp-includes/taxonomy.php: unregister_taxonomy()
• wp-includes/class-wp-term.php: WP_Term::get_instance()
• wp-includes/customize/class-wp-customize-nav-menu-item-setting.php: WP_Customize_Nav_Menu_Item_Setting::populate_value()
• wp-admin/includes/class-wp-screen.php: WP_Screen::get()
• wp-admin/includes/class-wp-terms-list-table.php: WP_Terms_List_Table::__construct()
• wp-admin/includes/nav-menu.php: _wp_ajax_menu_quick_search()
• wp-includes/category-template.php: wp_list_categories()
• wp-includes/deprecated.php: is_taxonomy()
• wp-includes/widgets/class-wp-widget-tag-cloud.php: WP_Widget_Tag_Cloud::_get_current_taxonomy()
• wp-includes/class-wp-tax-query.php: WP_Tax_Query::clean_query()
• wp-includes/taxonomy.php: wp_update_term()
• wp-includes/taxonomy.php: wp_get_object_terms()
• wp-includes/taxonomy.php: wp_insert_term()
• wp-includes/taxonomy.php: wp_set_object_terms()
• wp-includes/taxonomy.php: wp_remove_object_terms()
• wp-includes/taxonomy.php: get_term_by()
• wp-includes/taxonomy.php: get_term_children()
• wp-includes/taxonomy.php: get_terms()
• wp-includes/taxonomy.php: get_taxonomy()
• wp-includes/taxonomy.php: is_taxonomy_hierarchical()
• wp-includes/taxonomy.php: get_objects_in_term()
• wp-includes/taxonomy.php: get_term()
• wp-includes/link-template.php: get_adjacent_post()
• wp-includes/link-template.php: get_boundary_post()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_newTerm()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_editTerm()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_deleteTerm()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_getTerm()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_getTerms()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_getTaxonomy()
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User Contributed Notes

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 Codex

   Basic Example

   
   $taxonomy_exist = taxonomy_exists( 'category' );
   // Returns true
   
   $taxonomy_exist = taxonomy_exists( 'post_tag' );
   // Returns true
   
   $taxonomy_exist = taxonomy_exists( 'link_category' );
   // Returns true
   
   $taxonomy_exist = taxonomy_exists( 'my_taxonomy' );
   // Returns false if global $wp_taxonomies['my_taxonomy'] is not set