Targeting Checkout Fields in PHP

That filter is the recommended one, but it doesn’t work for every property of every field. See:
https://woocommerce.com/document/tutorial-customising-checkout-fields-using-actions-and-filters/
Search the page for ‘woocommerce_default_address_fields‘, about 1/3rd of the way down. So:

add_filter( 'woocommerce_default_address_fields', 'wc_npr_filter_acct', 10, 1 );
function wc_npr_filter_acct( $ftmfields ) {
  $ftmfields['city']['required'] = false;
  return $ftmfields;
}

Use ‘city’ not ‘billing_city’ here.

Hi @flashpaper

Thanks for reaching out!

I’m glad you were able to find a solution to your inquiry here and kudos to @lorro for sharing it with the community too! 🙂

I will be marking this thread as resolved. Should you have further inquiries, kindly create a new topic here.

Thanks!