Не склоняет слово "Товаров" - Разработки и улучшения

        /* $singular = 'товар', $plural_1 = 'товара', $plural_2 = 'товаров' */


    public static function getCorrectRussianPlural($count, $singular, $plural_1, $plural_2)
    {

        if ($count == 0 OR ($count > 4 AND $count < 21) OR ($count > 20 AND ($count % 10 == 0 OR ($count % 10 > 4 AND $count % 10 < 11)))) {
            $correct_word = $plural_2;
        } elseif ($count == 1 OR ($count > 20 AND $count % 10 == 1)) {
            $correct_word = $singular;
        } elseif (($count > 1 AND $count < 5) OR ($count > 20 AND ($count % 10 > 1 AND $count % 10 < 5))) {
            $correct_word = $plural_1;
        }

        return $correct_word;
    }

<td>
<span id = "jshop_quantity_products"><?php print $cart->count_product?></span>&nbsp;<?php print _JSHOP_PRODUCTS_X?>
</td>

<td>
      <span id = "jshop_quantity_products"><?php print $cart->count_product?></span>&nbsp;<?php if ($cart->count_product == 0 OR ($cart->count_product > 4 AND $cart->count_product < 21) OR ($cart->count_product > 20 AND ($cart->count_product % 10 == 0 OR ($cart->count_product % 10 > 4 AND $count % 10 < 11)))) {?>
            <?php print _JSHOP_KPRODUCTS;?>
		<?php	} elseif ($cart->count_product == 1 OR ($cart->count_product > 20 AND $cart->count_product % 10 == 1)) { ?>
		<?php	 print _JSHOP_KPRODUCTS_1;?>
      <?php  } elseif (($cart->count_product > 1 AND $cart->count_product < 5) OR ($cart->count_product > 20 AND ($cart->count_product % 10 > 1 AND $cart->count_product % 10 < 5))) {?>
     <?php       print _JSHOP_KPRODUCTS_2;?>
      <?php  }?>
    </td>

if(!function_exists('number_ending')){
		function number_ending($number, $ending0, $ending1, $ending2) {
		$num100 = $number % 100;
		$num10 = $number % 10;
			if ($num100 >= 5 && $num100 <= 20) {
				return $ending0;
			} else if ($num10 == 0) {
				return $ending0;
			} else if ($num10 == 1) {
				return $ending1;
			} else if ($num10 >= 2 && $num10 <= 4) {
				return $ending2;
			} else if ($num10 >= 5 && $num10 <= 9) {
				return $ending0;
			} else {
				return $ending2;
			}
		}
	}
$pokupka_text = number_ending($cart->count_product, JText::_( 'POKUPOK' ), JText::_( 'POKUPKA' ), JText::_( 'POKUPKI' ));