is_category( mixed $category = '' )

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

Contents

Description 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 Parameters

$category

(mixed) (Optional) Category ID, name, slug, or array of Category IDs, names, and slugs.

Default value: ''

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Return Return

(bool)

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Source 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 );
}

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Changelog Changelog

Changelog
Version Description
1.5.0 Introduced.

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More Information More Information

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Uses Uses

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

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

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

Mark something as being incorrectly called.

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Used By Used By

Used By
Used By Description
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()

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

Display or retrieve the HTML dropdown list of categories.
wp-includes/category-template.php: wp_list_categories()

Display or retrieve 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.
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User Contributed Notes 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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