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

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

Contents

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.

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Parameters

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

Default: ''

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Return

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

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More Information

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Source

File: wp-includes/query.php. View all references 

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 );
}

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Used By

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

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

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

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

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

Displays or retrieves the HTML dropdown list of categories.
wp_list_categories() wp-includes/category-template.php

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

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

Displays or retrieves page title for all areas of blog.
single_term_title() wp-includes/general-template.php

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

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

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

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

Changelog
Version Description
1.5.0 Introduced.

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User Contributed Notes

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    Contributed by Codex —

    Examples

    is_category();
// When any Category archive page is being displayed.

is_category( '9' );
// When the archive page for Category 9 is being displayed.

is_category( 'Stinky Cheeses' );
// When the archive page for the Category with Name "Stinky Cheeses" is being displayed.

is_category( 'blue-cheese' );
// When the archive page for the Category with Category Slug "blue-cheese" is being displayed.

is_category( array( 9, 'blue-cheese', 'Stinky Cheeses' ) );
// Returns true when the category of posts being displayed is either term_ID 9,
// or slug "blue-cheese", or name "Stinky Cheeses".
// Note: the array ability was added in version 2.5.

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