Custom #_ATTENDEES placeholder inc. booking space attendees

<?php
/*
 * This snippet will override template when using placeholder #_ATTENDEES and will add attendee names captured by attendee form
 * This assumes that you are using a field with ID attendee_name in your attendee form.
 *
 * How to install:
 * 1. create these folders within your theme directory
 *    wp-contents > themes > Your Theme > (create these folders) plugins > events-manager > placeholders
 * 2. create attendees.php inside placeholder folder at step#1 then edit
 * 3. paste this whole snippet
 */
/* @var $EM_Event EM_Event */
$people = array();
$EM_Bookings = $EM_Event->get_bookings();
if( count($EM_Bookings->bookings) > 0 ){
    ?>
    <ul class="event-attendees">
    <?php
    foreach( $EM_Bookings as $EM_Booking){ /* @var $EM_Booking EM_Booking */

        $attendees = $EM_Booking->booking_meta['attendees'];

        if($EM_Booking->booking_status == 1 && !in_array($EM_Booking->get_person()->ID, $people) ){
            $people[] = $EM_Booking->get_person()->ID;
            echo '<li>'. $EM_Booking->get_person()->get_name() .' '. get_avatar($EM_Booking->get_person()->ID, 50) .'</li>';
        }elseif($EM_Booking->booking_status == 1 && $EM_Booking->is_no_user() ){
            echo '<li>'. $EM_Booking->get_person()->get_name() .' '. get_avatar($EM_Booking->get_person()->ID, 50) .'</li>';
        }
        $attendees_list = "<ul>";
        if ( !empty($attendees) ){
            $count = 0;
            foreach($attendees as $key => $value) {
                foreach($value as $key_attendee => $value_attendee) {
                    if ( $count >= 1 )$attendees_list .= "<li>".$value_attendee["attendee_name"]."</li>";
                    $count += 1;
                }
            }
        }
        echo $attendees_list."</ul>";
    }
    ?>
    </ul>
    <?php
}