bp_core_ajax_widget_members()

function bp_core_ajax_widget_members() {
    global $members_template;
	check_ajax_referer( 'bp_core_widget_members' );

	// Setup some variables to check.
	$filter      = ! empty( $_POST['filter']      ) ? $_POST['filter']                : 'recently-active-members';
	$max_members = ! empty( $_POST['max-members'] ) ? absint( $_POST['max-members'] ) : 5;

	// Determine the type of members query to perform.
	switch ( $filter ) {

		// Newest activated.
		case 'newest-members' :
			$type = 'newest';
			break;

		// Popular by friends.
		case 'popular-members' :
			if ( bp_is_active( 'friends' ) ) {
				$type = 'popular';
			} else {
				$type = 'active';
			}
			break;

		// Default.
		case 'recently-active-members' :
		default :
			$type = 'active';
			break;
	}

	// Setup args for querying members.
	$members_args = array(
		'user_id'         => 0,
		'type'            => $type,
		'per_page'        => $max_members,
		'max'             => $max_members,
		'populate_extras' => true,
		'search_terms'    => false,
	);

	// Query for members.
	if ( bp_has_members( $members_args ) ) : ?>
		<?php echo '0[[SPLIT]]'; // Return valid result. TODO: remove this. ?>
		<?php while ( bp_members() ) : bp_the_member(); ?>
			<li class="vcard">
                <div class="item-avatar">
                    <a href="<?php bp_member_permalink() ?>">
						<?php bp_member_avatar(); ?>
						<?php
						$current_time = current_time( 'mysql', 1 );
						$diff =  strtotime( $current_time ) - strtotime( $members_template->member->last_activity );
						if ( $diff < 300 ) { // 5 minutes  =  5 * 60 ?>
							<span class="member-status online"></span>
						<?php } ?>
					</a>
                </div>

                <div class="item">
                    <div class="item-title fn"><a href="<?php bp_member_permalink(); ?>"><?php bp_member_name(); ?></a></div>
                    <div class="item-meta">
						<?php if ( 'newest' == $settings['member_default'] ) : ?>
                            <span class="activity" data-livestamp="<?php bp_core_iso8601_date( bp_get_member_registered( array( 'relative' => false ) ) ); ?>"><?php bp_member_registered(); ?></span>
						<?php elseif ( 'active' == $settings['member_default'] ) : ?>
                            <span class="activity" data-livestamp="<?php bp_core_iso8601_date( bp_get_member_last_active( array( 'relative' => false ) ) ); ?>"><?php bp_member_last_active(); ?></span>
						<?php else : ?>
                            <span class="activity"><?php bp_member_total_friend_count(); ?></span>
						<?php endif; ?>
                    </div>
                </div>
                <div class="member_last_visit"></div>
			</li>

		<?php endwhile; ?>

	<?php else: ?>
		<?php echo "-1[[SPLIT]]<li>"; ?>
		<?php esc_html_e( 'There were no members found, please try another filter.', 'buddyboss' ) ?>
		<?php echo "</li>"; ?>
	<?php endif;
}