bp_adminbar_authors_menu()

function bp_adminbar_authors_menu() {
	global $wpdb;

	// Only for multisite
	if ( ! is_multisite() ) {
		return false;
	}

	// Hide on root blog
	if ( bp_is_root_blog( $wpdb->blogid ) || ! bp_is_active( 'blogs' ) ) {
		return false;
	}

	$blog_prefix = $wpdb->get_blog_prefix( $wpdb->blogid );
	$authors     = $wpdb->get_results( "SELECT user_id, user_login, user_nicename, display_name, user_email, meta_value as caps FROM $wpdb->users u, $wpdb->usermeta um WHERE u.ID = um.user_id AND meta_key = '{$blog_prefix}capabilities' ORDER BY um.user_id" );

	if ( !empty( $authors ) ) {
		// This is a blog, render a menu with links to all authors
		echo '<li id="bp-adminbar-authors-menu"><a href="/">';
		_e('Blog Authors', 'buddyboss');
		echo '</a>';

		echo '<ul class="author-list">';
		foreach( (array) $authors as $author ) {
			$caps = maybe_unserialize( $author->caps );
			if ( isset( $caps['subscriber'] ) || isset( $caps['contributor'] ) ) {
				continue;
			}

			echo '<li>';
			echo '<a href="' . bp_core_get_user_domain( $author->user_id, $author->user_nicename, $author->user_login ) . '">';
			echo bp_core_fetch_avatar( array(
				'item_id' => $author->user_id,
				'email'   => $author->user_email,
				'width'   => 15,
				'height'  => 15,
				'alt'     => sprintf( __( 'Profile photo of %s', 'buddyboss' ), $author->display_name )
			) );
			echo ' ' . $author->display_name . '</a>';
			echo '<div class="admin-bar-clear"></div>';
			echo '</li>';
		}
		echo '</ul>';
		echo '</li>';
	}
}