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is_multi_author()

Determines whether this site has more than one author.

Description

Checks to see if more than one author has published posts.

For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.

Return

(bool) Whether or not we have more than one author

Source

File: wp-includes/author-template.php 

function is_multi_author() {
	global $wpdb;

	$is_multi_author = get_transient( 'is_multi_author' );
	if ( false === $is_multi_author ) {
		$rows            = (array) $wpdb->get_col( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 2" );
		$is_multi_author = 1 < count( $rows ) ? 1 : 0;
		set_transient( 'is_multi_author', $is_multi_author );
	}

	/**
	 * Filters whether the site has more than one author with published posts.
	 *
	 * @since 3.2.0
	 *
	 * @param bool $is_multi_author Whether $is_multi_author should evaluate as true.
	 */
	return apply_filters( 'is_multi_author', (bool) $is_multi_author );
}

Uses

Uses Description
wp-includes/plugin.php: apply_filters()

Calls the callback functions that have been added to a filter hook.
wp-includes/option.php: get_transient()

Retrieves the value of a transient.
wp-includes/option.php: set_transient()

Sets/updates the value of a transient.
wp-includes/author-template.php: is_multi_author

Filters whether the site has more than one author with published posts.
wp-includes/wp-db.php: wpdb::get_col()

Retrieves one column from the database.

Changelog

Version Description
3.2.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/is_multi_author