is_author( int|string|int[]|string[] $author = '' )

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

Contents

Description

If the $author parameter is specified, this function will additionally check if the query is for one of the authors 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

$author

(int|string|int[]|string[]) (Optional) User ID, nickname, nicename, or array of such to check against.

Default value: ''

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Return

(bool) Whether the query is for an existing author archive page.

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Source

File: wp-includes/query.php 

function is_author( $author = '' ) {
	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_author( $author );
}

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Uses

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

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

Is the query for an existing author 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 Description
wp-includes/rest-api.php: rest_get_queried_resource_route()

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

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

Retrieves the description for an author, post type, or term archive.
wp-includes/general-template.php: get_the_archive_title()

Retrieve the archive title based on the queried object.
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/class-wp.php: WP::handle_404()

Set the Headers for 404, if nothing is found for requested URL.
wp-includes/user.php: wp_dropdown_users()

Creates dropdown HTML content of users.
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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Changelog

Changelog
Version Description
1.5.0 Introduced.

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User Contributed Notes

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    Contributed by Codex —

    Examples

    is_author();
// When any Author page is being displayed.

is_author('4');
// When the archive page for Author number (ID) 4 is being displayed.

is_author('Vivian');
// When the archive page for the Author with Nickname "Vivian" is being displayed.

is_author('john-jones');
// When the archive page for the Author with Nicename "john-jones" is being displayed.

is_author(array(4,'john-jones','Vivian'));
// When the archive page for the author is either user ID 4, or user_nicename "john-jones",
// or nickname "Vivian".  Note: the array ability was added at Version 2.5.

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