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is_author()

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

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

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.

Parameters

$authorint|string|int[]|string[]optional
User ID, nickname, nicename, or array of such to check against.

Default:''

Return

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

Source

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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UsesDescription
WP_Query::is_author()wp-includes/class-wp-query.php

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

_doing_it_wrong()wp-includes/functions.php

Marks something as being incorrectly called.

Used byDescription
rest_get_queried_resource_route()wp-includes/rest-api.php

Gets the REST route for the currently queried object.

wp_get_document_title()wp-includes/general-template.php

Returns document title for the current page.

get_the_archive_description()wp-includes/general-template.php

Retrieves the description for an author, post type, or term archive.

get_the_archive_title()wp-includes/general-template.php

Retrieves the archive title based on the queried object.

feed_links_extra()wp-includes/general-template.php

Displays the links to the extra feeds such as category feeds.

wp_title()wp-includes/general-template.php

Displays or retrieves page title for all areas of blog.

WP::handle_404()wp-includes/class-wp.php

Set the Headers for 404, if nothing is found for requested URL.

wp_dropdown_users()wp-includes/user.php

Creates dropdown HTML content of users.

get_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 links to the proper URL based on the site url.

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Changelog

VersionDescription
1.5.0Introduced.

User Contributed Notes

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    Codex
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    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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