bookings end placeholder

<?php

// create #_BOOKINGSEND
function em_bookings_end($replace, $EM_Event, $result) {
  if ( $result == '#_BOOKINGSEND' ) {

    // IMPORTANT : DST OFFSET MUST BE SET
    $now = date('Y-m-d  H:i:s', strtotime('+2 hours'));

    $bookingsend            = "";
    $rsvp                           = '';
    $rsvp                           .= $EM_Event->event_rsvp_date;
    $rsvp                           .= ' ';
    $rsvp                           .= $EM_Event->event_rsvp_time;
    $countdownformat    = date("j M Y H:i:s", strtotime($rsvp));
    $nowstring              = strtotime($now);
    $endstring              = strtotime($rsvp);

    if ( !empty($endstring) ) { // if end date is set
        if ( $nowstring > $endstring ) { // if end date has passed
            $replace = "Sorry, it's closed already";
        } else {
            $replace = $countdownformat;
        }
    } else { // if end date is not set
        $replace = "Registrations haven't started yet.";
    }
  }
  return $replace;
}
add_filter('em_event_output_placeholder','em_bookings_end', 1, 4);