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

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

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

Default:''

Return

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

More Information

Source

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

VersionDescription
1.5.0Introduced.

User Contributed Notes

  1. Skip to note 2 content

    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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