Thay đổi cách hiển thị giá cho các Variable Product trong Woocommerce

function wc_wc20_variation_price_format( $price, $product ) {
    //Main Price
    $prices = array( $product->get_variation_price( 'min', true ), $product->get_variation_price( 'max', true ) );
    $price = $prices[0] !== $prices[1] ? sprintf( __( 'Giá từ: %1$s', 'woocommerce' ), wc_price( $prices[0] ) ) : wc_price( $prices[0] );
    // Sale Price
    $prices = array( $product->get_variation_regular_price( 'min', true ), $product->get_variation_regular_price( 'max', true ) );
    sort( $prices );
    $saleprice = $prices[0] !== $prices[1] ? wc_price( $prices[0] ) : wc_price( $prices[0] );
    if ( $price !== $saleprice ) {
      $price = '<del>' . $saleprice . '</del> <ins>' . $price . '</ins>';
    }
    return $price;
}
add_filter( 'woocommerce_variable_sale_price_html', 'wc_wc20_variation_price_format', 10, 2 );
add_filter( 'woocommerce_variable_price_html', 'wc_wc20_variation_price_format', 10, 2 );

function find_valid_variations() {
  global $product;
  $variations = $product->get_available_variations();
  $attributes = $product->get_attributes();
  $new_variants = array();
  // Loop through all variations
  foreach ($variations as $variation) {
    // Peruse the attributes.
    // 1. If both are explicitly set, this is a valid variation
    // 2. If one is not set, that means any, and we must 'create' the rest.
    $valid = true; // so far
    foreach ($attributes as $slug => $args) {
      if (array_key_exists("attribute_$slug", $variation['attributes']) && !empty($variation['attributes']["attribute_$slug"])) {
        // Exists
      } else {
        // Not exists, create
        $valid = false; // it contains 'anys'
        // loop through all options for the 'ANY' attribute, and add each
        foreach (explode('|', $attributes[$slug]['value']) as $attribute) {
          $attribute = trim($attribute);
          $new_variant = $variation;
          $new_variant['attributes']["attribute_$slug"] = $attribute;
          $new_variants[] = $new_variant;
        }
      }
    }
    // This contains ALL set attributes, and is itself a 'valid' variation.
    if ($valid)
      $new_variants[] = $variation;
  }
  return $new_variants;
}
function list_price_variable() {
  global $product, $post;
  $variations = find_valid_variations();
  // Check if the special 'price_grid' meta is set, if it is, load the default template:
  if (get_post_meta($post->ID, 'price_grid', true)) {
    // Enqueue variation scripts
    wp_enqueue_script('wc-add-to-cart-variation');
    // Load the template
    wc_get_template('single-product/add-to-cart/variable.php', array(
      'available_variations' => $product->get_available_variations(),
      'attributes' => $product->get_variation_attributes(),
      'selected_attributes' => $product->get_variation_default_attributes()
    ));
    return;
  }
  // Cool, lets do our own template!
  ?>
  <table class="variations variations-grid" cellspacing="0">
    <tbody>
      <?php
      foreach ($variations as $key => $value) {
        if (!$value['variation_is_visible'])
          continue;
        ?>
        <tr>
          <td>
            <?php foreach ($value['attributes'] as $key => $val) {
              $val = str_replace(array('-', '_'), ' ', $val);
              $category_slug = str_replace('attribute_', '', $key);
              $category = get_term_by('slug', ucwords($val), $category_slug);
              $categoryName = $category->name . '&nbsp;';
              printf('<span class="attr attr-%s">%s</span>', $key, $categoryName);
            } ?>
          </td>
          <td>
            <?php echo $value['price_html']; ?>
          </td>
        </tr>
      <?php } ?>
    </tbody>
  </table>
  <?php
}
function wc_wc20_variation_price_format($price, $product) {
  $price = list_price_variable();
  return $price;
}
//add_filter( 'woocommerce_variable_sale_price_html', 'wc_wc20_variation_price_format', 10, 2 );
add_filter('woocommerce_variable_price_html', 'wc_wc20_variation_price_format', 10, 2);