12.1 Xây dựng field title (ok)

C:\xampp\htdocs\test\wp-content\plugins\plugin-name\includes\class-wpf-utils_ct.php

<?php
class WPF_Utils_CT {
  public static function get_wc_attributes($receate = FALSE) {
    static $attributes = null;
    if (is_null($attributes)) {
      $attribute_taxonomies = wc_get_attribute_taxonomies();
      if (!empty($attribute_taxonomies)) {
        foreach ($attribute_taxonomies as $tax) {
          $name              = wc_attribute_taxonomy_name($tax->attribute_name);
          $attributes[$name] = $tax->attribute_label ? $tax->attribute_label : $tax->attribute_name;
        }
      } else {
        $attributes = array();
      }
    }
    return $attributes;
  }
  public static function get_default_fields() {
    static $labels = array();
    if (empty($labels)) {
      $labels = array(
        'title'   => __('Product Title', 'wpf'),
        'sku'     => __('SKU', 'wpf'),
        'wpf_ct_cat' => __('Category', 'wpf'),
        'wpf_ct_tag' => __('Tag', 'wpf'),
        'price'   => __('Price', 'wpf'),
        'instock' => __('In Stock', 'wpf'),
        'onsale'  => __('On Sale', 'wpf'),
        'submit'  => __('Submit Button', 'wpf'),
      );
    }
    return $labels;
  }
  public static function module_multi_text($id, array $data, array $languages, $key, $name, $input = 'text', $placeholder = false) {
  ?>
    <div class="wpf_ct_back_active_module_row">
      <?php if (!$placeholder): ?>
        <div class="wpf_ct_back_active_module_label">
          <label for="<?php echo $id ?>_<?php echo $key ?>"><?php echo $name; ?></label>
        </div>
      <?php endif; ?>
      <?php self::module_language_tabs($id, $data, $languages, $key, $input, $placeholder); ?>
    </div>
    <?php
  }
  public static function module_language_tabs($id, array $data, array $languages, $key, $input = 'text', $placeholder = false, $as_array = false) {
    ?>
    <?php if (!empty($languages)): ?>
      <div class="wpf_ct_back_active_module_input">
        <?php  
          $name = $as_array ? $id : '[' . $id . ']';
          if ( $key ) {
            $name .= '[' . $key . ']';
            $values = isset( $data[ $key ] ) ? $data[ $key ] : array();
          } else {
            $values = isset( $data[ $id ] ) ? $data[ $id ] : array();
          }
        ?>
        <ul class="wpf_language_fields">
          <?php foreach ($languages as $code => $lng ) :
            $value = isset( $values[ $code ] ) ? $values[ $code ] : '';
          ?>
            <li data-lng="wpf_lng_<?php echo $code ?>" <?php if (isset($lng['selected'])): ?>class="wpf_active_lng"<?php endif; ?>>
              <?php  
                switch ($input) {
                  case 'text':
                  ?>
                    <input id="wpf_<?php echo $id ?><?php if ($key): ?>_<?php echo $key ?><?php endif;?>"
                    <?php if ($placeholder): ?>placeholder="<?php echo $placeholder ?>" <?php endif;?> type="text"
                    class="wpf_towidth" name="<?php echo $name ?>[<?php echo $code ?>]"
                    <?php if ($value): ?>value="<?php esc_attr_e($value)?>" <?php endif;?> />
                  <?php
                  break;
                }
              ?>
            </li>
          <?php endforeach; ?>
        </ul>
      </div>
    <?php endif; ?>
    <?php
  }
}
?>