Woocommerce - 如何隐藏小数点后第二位的尾随零？

Question

So I have a question I was hoping somebody might be able to help me out with...
I have a WordPress website that uses WooCommerce and I'm trying to do something relatively specific. The site has a fair deal of bulk pricing discounts for various products.
Now when it comes to the bulk pricing I kind of need the calculations to be done with four decimal places (ie $0.1234), So I have the WooCommerce settings set so that the number of decimals is 4.
The thing is, that on a lot of our products we don't have bulk pricing discounts; in most of these cases the four decimal places are completely unnecessary. (For example: $0.5500 or $12.0000) Is there any way I can trim the trailing the zeros but only if it is after the second decimal place?
For example, if I had $0.5500 it would be displayed as $0.55 and if I had $12.0000 it would be displayed as $12.00

I know a very similar question was asked a few years ago ( see here ), but unfortunately, the answer that worked in that case does not seem to work for me... That being said, I could be trying to use it the wrong way. I am not very familiar with using regular expressions in a WordPress "functions.php" file.

Any help at all would be greatly appreciated! Thanks!

Edit:
At this point I have something along the lines of:

add_action('wc_price', 'custom_price_disp');
function custom_price_disp($price) {
    $count = null;
    $resultingPrice = preg_replace('/(?<=\d{2})(0+)$/', '', $price, -1, $count);
    return $resultingPrice;
}

But this code does not seem to work. Prices are still displayed the same as they were before.

Answer 1

You can use this function in your functions.php child theme, it works fine and removes .00 from every price:

add_filter('woocommerce_price_trim_zeros', 'wc_hide_trailing_zeros', 10, 1);
function wc_hide_trailing_zeros( $trim ) {
    // set to false to show trailing zeros
    return true;
}

Answer 2

I've not used it myself, but based on the aforementioned wc_price() method's code, it looks like you can take advantage of a filter:

if ( apply_filters( 'woocommerce_price_trim_zeros', false ) && $decimals > 0 ) {
  $price = wc_trim_zeros( $price );
}

You should be able to add this to your functions.php :

add_filter( 'woocommerce_price_trim_zeros', true );

To trigger this behavior.