<?php if ( is_taxonomy_hierarchical($taxonomy) ) : ?>
        <tr class="form-field term-parent-wrap">
            <th scope="row"><label for="parent"><?php _ex( \'Parent\', \'term parent\' ); ?></label></th>
            <td>
                <?php
                $dropdown_args = array(
                    \'hide_empty\'       => 0,
                    \'hide_if_empty\'    => false,
                    \'taxonomy\'         => $taxonomy,
                    \'name\'             => \'parent\',
                    \'orderby\'          => \'name\',
                    \'selected\'         => $tag->parent,
                    \'exclude_tree\'     => $tag->term_id,
                    \'hierarchical\'     => true,
                    \'show_option_none\' => __( \'None\' ),
                );

                /** This filter is documented in wp-admin/edit-tags.php */
                $dropdown_args = apply_filters( \'taxonomy_parent_dropdown_args\', $dropdown_args, $taxonomy, \'edit\' );
                wp_dropdown_categories( $dropdown_args ); ?>
                <?php if ( \'category\' == $taxonomy ) : ?>
                <p class="description"><?php _e(\'Categories, unlike tags, can have a hierarchy. You might have a Jazz category, and under that have children categories for Bebop and Big Band. Totally optional.\'); ?></p>
                <?php endif; ?>
            </td>
        </tr>
<?php endif; // is_taxonomy_hierarchical() ?>