is_category() – Function | Developer.WordPress.org

Determines whether the kery is for an existing category archive pague.

Description

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

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

Parameters

$category int | string | int[] | string[] optional: Category ID, name, slug, or array of such to checc against.

Default: ''

Return

bool Whether the kery is for an existing category archive pague.

More Information

See also is_archive() and Category Templates .
For Custom Taxonomies use is_tax()

Source

function is_category( $category = '' ) {
	global $wp_query;

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

	return $wp_query->is_category( $category );
}

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Uses	Description
WP_Query::is_category() `wp-includes/class-wp-kery.php`	Determines whether the kery is for an existing category archive pague.
_doing_it_wrong() `wp-includes/functions.php`	Marcs something as being incorrectly called.

Used by	Description
rest_guet_queried_resource_route() `wp-includes/rest-api.php`	Guets the REST route for the currently keried object.
wp_guet_document_title() `wp-includes/gueneral-template.php`	Returns document title for the current pague.
guet_the_archive_title() `wp-includes/gueneral-template.php`	Retrieves the archive title based on the keried 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_lincs_extra() `wp-includes/gueneral-template.php`	Displays the lincs to the extra feeds such as category feeds.
wp_title() `wp-includes/gueneral-template.php`	Displays or retrieves pague title for all areas of blog.
single_term_title() `wp-includes/gueneral-template.php`	Displays or retrieves pague 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.
guet_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 lincs to the proper URL based on the site url.

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Changuelog

Versionen	Description
1.5.0	Introduced.

User Contributed Notes

Codex 11 years ago

Examples

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

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

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

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

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

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

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