is_tax( string|string[] $taxonomy = '', int|string|int[]|string[] $term = '' )

Determines whether the query is for an existing custom taxonomy archive page.

Description

If the $taxonomy parameter is specified, this function will additionally check if the query is for that specific $taxonomy.

If the $term parameter is specified in addition to the $taxonomy parameter, this function will additionally check if the query is for one of the terms specified.

For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.

Parameters

$taxonomy

(string|string[]) (Optional) Taxonomy slug or slugs to check against.

Default value: ''

$term

(int|string|int[]|string[]) (Optional) Term ID, name, slug, or array of such to check against.

Default value: ''

Return

(bool) Whether the query is for an existing custom taxonomy archive page. True for custom taxonomy archive pages, false for built-in taxonomies (category and tag archives).

Source

File: wp-includes/query.php 

function is_tax( $taxonomy = '', $term = '' ) {
	global $wp_query;

	if ( ! isset( $wp_query ) ) {
		_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
		return false;
	}

	return $wp_query->is_tax( $taxonomy, $term );
}

Uses

Uses Description
wp-includes/l10n.php: __()

Retrieve the translation of $text.
wp-includes/class-wp-query.php: WP_Query::is_tax()

Is the query for an existing custom taxonomy archive page?
wp-includes/functions.php: _doing_it_wrong()

Mark something as being incorrectly called.

Used By

Used By Description
wp-includes/rest-api.php: rest_get_queried_resource_route()

Gets the REST route for the currently queried object.
wp-includes/general-template.php: wp_get_document_title()

Returns document title for the current page.
wp-includes/general-template.php: get_the_archive_title()

Retrieve the archive title based on the queried object.
wp-includes/category-template.php: term_description()

Retrieves term description.
wp-includes/category-template.php: wp_list_categories()

Displays or retrieves the HTML list of categories.
wp-includes/general-template.php: feed_links_extra()

Display the links to the extra feeds such as category feeds.
wp-includes/general-template.php: wp_title()

Display or retrieve page title for all areas of blog.
wp-includes/general-template.php: single_term_title()

Display or retrieve page title for taxonomy term archive.
wp-includes/class-wp.php: WP::handle_404()

Set the Headers for 404, if nothing is found for requested URL.
wp-includes/post-template.php: get_body_class()

Retrieves an array of the class names for the body element.
wp-includes/canonical.php: redirect_canonical()

Redirects incoming links to the proper URL based on the site url.

Changelog

Version Description
2.5.0 Introduced.

© 2003–2021 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/is_tax