is_category( int|string|int[]|string[] $category = '' )

Determines whether the query is for an existing category archive page.

Description

If the $category parameter is specified, this function will additionally check if the query is for one of the categories specified.

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

Parameters

$category

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

Default value: ''

Return

(bool) Whether the query is for an existing category archive page.

More Information

Source

File: wp-includes/query.php

function is_category( $category = '' ) {
	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_category( $category );
}

Changelog

Version Description
1.5.0 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/is_category