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is_author() WP 1.0

Is the query for an existing author archive page?

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

  • Global. WP_Query. $wp_query Global WP_Query instance.

No Hooks.




is_author( $author );
User ID, nickname, nicename, or array of User IDs, nicknames, and nicenames
Default: ''

Code of is_author: wp-includes/query.php VER 4.9.8

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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