How to cancel the work of a php function in one category?

Question

WordPress

Actually, here is the function of changing the price at the woocommerce rate:

add_action ('admin_menu', 'dynamic_price_button');
add_action ('woocommerce_get_price', 'change_price');
remove_action ('woocommerce_get_price', 'change_price2');
add_action( 'admin_init', 'register_mysettings' );

function register_mysettings () {
  register_setting( 'baw-settings-group', 'kurs' );
  register_setting( 'baw-settings-group', 'valuta' );
}

function change_price ($this) {
  $int = $this;
  $kurs=get_option('kurs');
  if ($kurs!='') {
    return $int*$kurs;}
    
  else  return  $int;
  
}
  
function dynamic_price_button () {
  add_submenu_page ('woocommerce', 'Курс сегодня', 'Курс сегодня', 'manage_options', 'dynamic_price', 'setting_page');
}

...

Next comes the input with get_option('kurs');
Determine the category for which you want to cancel the operation of the function - I can

if( has_term( '1489', 'product_cat' ,$product->ID) )

and here is how to apply a specific category to that piece of code

function change_price ($this) {
  $int = $this;
  $kurs=get_option('kurs');
  if ($kurs!='') {
    return $int*$kurs;}
    
  else  return  $int;
  
}

I don't understand. Tell.
If you insert a category at the beginning of the part of the code, then the changes according to the formula will only be in the category in which I say - that is:

function change_price ($this) {
        if( has_term( '1489', 'product_cat' ,$product->ID) ) /*категория */
  $int = $this;
  $kurs=get_option('kurs');
  if ($kurs!='') {
    return $int*$kurs;}
    
  else  return  $int;
  
}

and I need a function not to occur in it.
what am i doing wrong?

Answer 1

function change_price ($this) {
        if( !has_term( '1489', 'product_cat' ,$product->ID) ) /*категория --вот тут в начале добавил !*/
  $int = $this;
  $kurs=get_option('kurs');
  if ($kurs!='') {
    return $int*$kurs;}
    
  else  return  $int;
  
}

Answer 2

First, format the code humanly (read about codestyle).
Second, make sure that the category is NOT the one in which you want to disable the feature.