Divi FilterGrid - Custom Sort Dropdown

functions.php

add_filter( 'dpdfg_custom_sorting_html', 'dpdfg_custom_sorting_html', 10, 2 );

function dpdfg_custom_sorting_html( $sorting_options_html, $props ) {
  if ( $props['module_id'] === 'custom-sorting' ) {
      $sorting_options_html = sprintf( '
        <div class="dp-dfg-sort-orderby">
        <div class="dp-dfg-filters-dropdown closed" data-parent="0">
        <p class="dp-dfg-dropdown-label"><span class="dp-dfg-dropdown-placeholder" data-text="%1$s&nbsp;">%1$s</span></p>
        <ul>
        <li class="dp-dfg-sort-option" data-value="date" data-order-value="ASC">%2$s</li>
        <li class="dp-dfg-sort-option" data-value="date" data-order-value="DESC">%3$s</li>
        <li class="dp-dfg-sort-option" data-value="title" data-order-value="ASC">%4$s</li>
        <li class="dp-dfg-sort-option" data-value="title" data-order-value="DESC">%5$s</li>
        <li class="dp-dfg-sort-option" data-value="default" data-order-value="ASC">%6$s</li>
        <li class="dp-dfg-sort-option" data-value="default" data-order-value="DESC">%7$s</li>
        </div>
        </div>
      ',
        $props['orderby_text'],
        __( 'Oldest', 'dpdfg-dp-divi-filtergrid' ),
        __( 'Newest', 'dpdfg-dp-divi-filtergrid' ),
        __( 'Title (A to Z)', 'dpdfg-dp-divi-filtergrid' ),
        __( 'Title (Z to A)', 'dpdfg-dp-divi-filtergrid' ),
        __( 'Default (ascending)', 'td' ),
	__( 'Default (descending)', 'td' ),
    );
  }

  return $sorting_options_html;
}