Order Email: How do I replace subtotals that are equal to zero with "TBD"?

Question

I'm working with the WooCommerce email-order-items.php and email-order-details.php template files. I'm trying to create some sort of 'if statement' that would replace item subtotal, total, and subtotal values with "TBD" (to be determined) if the value is equal to zero and then leave everything else as normal if the values are either negative or positive.

I've been trying to replace these lines in: wp-contents/themes/mytheme/woocommerce/emails/

'email-order-items.php': <?php echo $total['value']; ?>
'email-order-items.php': <?php echo $order->get_formatted_line_subtotal( $item ); ?>

Answer 1

For item subtotal

if($itemsubtotal == 0) {
  $itemsubtotal = "TBD";
}

For total

if($total == 0) {
  $total = "TBD";
}

For subtotal

if($subtotal == 0) {
  $subtotal = "TBD";
}

EDIT Change this line

 <td class="td" style="text-align:left; <?php if ( $i === 1 ) echo 'border-top-width: 4px;'; ?>"><?php echo $total['value']; ?></td>

TO

 <?php if($total['value'] != 0){ ?> <td class="td" style="text-align:left; <?php if ( $i === 1 ) echo 'border-top-width: 4px;'; ?>"><?php echo $total['value']; ?></td> <?php } else { ?> <td class="td" style="text-align:left; <?php if ( $i === 1 ) echo 'border-top-width: 4px;'; ?>"><?php echo "TBD"; ?></td> <?php } ?>

Similarly for other variables it can be done.