Limit custom price per kilo to 2 decimals in WooCommerce + ACF

Question

The following code allows to show the price per kilo using WooCommerce and ACF by creating a price_per_kilo custom product field via ACF:

global $product;

$price = $product->get_price();

$weight = $product->get_weight();

$id = $product->get_id();

$value = 1000 * $price / $weight;

update_field('price_per_kilo', $value, $id); // this code updates data for this field

the_field('price_per_kilo', $product->$id ); //show price per kilo

However it shows a lot of digits when the result is not round, do you know how I can limit to two decimal places ?

Answer 1

First here is a mistake in the_field('price_per_kilo', $product->$id ); where $product->$id should replaced by $id or $product->get_id().

You can use number_format() to limit the price to 2 decimals, so in your code just replace:

$value = 1000 * $price / $weight;

with:

$value = number_format( 1000 * $price / $weight, 2 );

Or to display a formatted price in WooCommerce with the currency, use wc_price() formatting price function as follows, replacing:

the_field('price_per_kilo', $product->$id );

with:

echo wc_price( get_field('price_per_kilo', $product->get_id() ) );