Display list of all events tickets

/*
 This placeholder will list the events tickets
 */
function my_em_ticket_list($replacement, $EM_Event, $result){
	switch( $result ){
		case '#_EVENTTICKETSLIST':
			$replacement = '<ul>';
			foreach( $EM_Event->get_tickets()->tickets as $EM_Ticket ){
				$replacement .= '<li>';
				$replacement .= $EM_Ticket->ticket_name.': '.$EM_Ticket->ticket_description.'<br>';
				$replacement .= ( !empty($EM_Ticket->ticket_start) ) ? date("Y-m-d", $EM_Ticket->ticket_start):'/';
				$replacement .= ( !empty($EM_Ticket->ticket_end) ) ? date("Y-m-d", $EM_Ticket->ticket_end):'';
				$replacement .= '</li>';
			}
			$replacement .= '</ul>';
			break;
	}
	return $replacement;
}
add_filter('em_event_output_placeholder','my_em_ticket_list',1,3);