is_tag( mixed $tag = '' )

Is the query for an existing tag archive page?

Description

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

Parameters

$tag

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

Default value: ''

Return

(bool)

Source

File: wp-includes/query.php 

function is_tag( $tag = '' ) {
	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.' ), 'WP-3.1.0' );
		return false;
	}

	return $wp_query->is_tag( $tag );
}

Expand Source Code View on GitHub

Related

Uses

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

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

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

Mark something as being incorrectly called.

Used By

Used By
Used By Description
wp-includes/general-template.php: feed_links_extra()

Display the links to the extra feeds such as category feeds.
wp-includes/general-template.php: get_the_archive_title()

Retrieve the archive title based on the queried object.
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/general-template.php: wp_get_document_title()

Returns document title for the current page.
wp-includes/category-template.php: term_description()

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

Display or retrieve the HTML list of categories.
wp-includes/post-template.php: get_body_class()

Retrieve the classes for the body element as an array.
wp-includes/canonical.php: redirect_canonical()

Redirects incoming links to the proper URL based on the site url.
wp-includes/class-wp.php: WP::handle_404()

Set the Headers for 404, if nothing is found for requested URL.
Show 5 more used by Hide more used by

Changelog

Changelog
Version Description
WP-2.3.0 Introduced.