EDD Tickets form (show # remaining tickets)

<form action="<?php echo esc_url( add_query_arg( 'eddtickets_process', 1, edd_get_checkout_uri() ) ); ?>"
      class="cart" method="post"
      enctype='multipart/form-data'>
        <table width="100%" class="tribe-events-tickets">
            <?php
            global $edd_options;
            $is_there_any_product         = false;
            $is_there_any_product_to_sell = false;

            ob_start();
            foreach ( $tickets as $ticket ) {

                $product = edd_get_download( $ticket->ID );

                $gmt_offset = ( get_option( 'gmt_offset' ) >= '0' ) ? ' +' . get_option( 'gmt_offset' ) : " " . get_option( 'gmt_offset' );
                $gmt_offset = str_replace( array( '.25', '.5', '.75' ), array( ':15', ':30', ':45' ), $gmt_offset );

                $end_date = null;
                if ( ! empty( $ticket->end_date ) ){
                    $end_date = strtotime( $ticket->end_date . $gmt_offset );
                }else{
                    $end_date = strtotime( tribe_get_end_date( get_the_ID(), false, 'Y-m-d G:i' ) . $gmt_offset );
                }

                $start_date = null;
                if ( !empty( $ticket->start_date ) )
                    $start_date = strtotime( $ticket->start_date . $gmt_offset );


                if ( ! TribeEDDTickets::is_stock_left( $product->ID ) || ( empty( $start_date ) || time() > $start_date ) && (  empty( $end_date ) || time() < $end_date ) ) {

                    $is_there_any_product = true;

                    echo sprintf( "<input type='hidden' name='product_id[]' value='%d'>", $ticket->ID );

                    echo "<tr>";
                    echo "<td width='75' class='edd'>";


                    if ( TribeEDDTickets::is_stock_left( $product->ID ) ) {

                        echo '<input type="number" class="edd-input" min="0" name="quantity_' . $ticket->ID . '" value="0"/>';

                        // How many remain?
                        $limit = (int) get_post_meta( $product->ID, '_stock', true );
                        $sold = (int) edd_get_download_sales_stats( $product->ID );
                        $remaining = absint( $limit - $sold );

                        if ( $remaining > 0 ) echo
                            " <span class='edd_tickets_remaining'> $remaining tickets still available! </span> ";

                        $is_there_any_product_to_sell = true;

                    } else {
                        echo "<span class='tickets_nostock'>" . esc_html__( 'Out of stock!', 'tribe-eddtickets' ) . "</span>";
                    }
                    echo "</td>";

                    echo "<td nowrap='nowrap' class='tickets_name'>";
                    echo $ticket->name;
                    echo "</td>";

                    echo "<td class='tickets_price'>";
                    echo edd_price( $product->ID );
                    echo "</td>";

                    echo "<td class='tickets_description'>";
                    echo $ticket->description;
                    echo "</td>";

                    echo "</tr>";
                }

            }
            $contents = ob_get_clean();
            if ( $is_there_any_product ) {
                ?>
                <h2 class="tribe-events-tickets-title"><?php _e( 'Tickets', 'tribe-eddtickets' );?></h2>
                <?php echo $contents; ?>
                <?php if ( $is_there_any_product_to_sell ) : ?>
                    <?php
                    $color = isset( $edd_options[ 'checkout_color' ] ) ? $edd_options[ 'checkout_color' ] : 'gray';
                    $color = ( $color == 'inherit' ) ? '' : $color;
                    ?>
                    <tr>
                        <td colspan="4" class='eddtickets-add'>

                            <button type="submit" class="edd-submit button <?php echo $color; ?>"><?php esc_html_e( 'Add to cart', 'tribe-eddtickets' );?></button>
                        </td>
                    </tr>
                    <?php
                endif;
            }
            ?>

        </table>

</form>