get_nonauthor_user_ids() WordPress Function

function get_nonauthor_user_ids() {
	_deprecated_function( __FUNCTION__, '3.1.0', 'get_users()' );

	global $wpdb;

	if ( !is_multisite() )
		$level_key = $wpdb->get_blog_prefix() . 'user_level';
	else
		$level_key = $wpdb->get_blog_prefix() . 'capabilities'; // WPMU site admins don't have user_levels.

	return $wpdb->get_col( $wpdb->prepare("SELECT user_id FROM $wpdb->usermeta WHERE meta_key = %s AND meta_value = '0'", $level_key) );
}
Uses	Description
wp-includes/load.php:is_multisite()	If Multisite is enabled.
wp-includes/functions.php:_deprecated_function()	Mark a function as deprecated and inform when it has been used.
wp-includes/wp-db.php:wpdb::get_col()	Retrieves one column from the database.
wp-includes/wp-db.php:wpdb::prepare()	Prepares a SQL query for safe execution.
wp-includes/wp-db.php:wpdb::get_blog_prefix()	Gets blog prefix.