WooCommerce custom product sort by code

sort_by.php

<div class="wrapper-dropdown">
<form class="woocommerce-ordering" method="get">
<select name="orderby" class="orderby filter_orderby" aria-label="Shop order">
<?php
    $catalog_orderby = apply_filters( 'woocommerce_catalog_orderby', array(
        'menu_order' => __( 'Default sorting', 'woocommerce' ),

    'popularity' => __( 'Sort by popularity', 'woocommerce' ),

    'rating'     => __( 'Sort by average rating', 'woocommerce' ),

    'date'       => __( 'Sort by latest', 'woocommerce' ),

    'price'      => __( 'Sort by price: low to high', 'woocommerce' ),

    'price-desc' => __( 'Sort by price: high to low', 'woocommerce' )
) );

if ( get_option( 'woocommerce_enable_review_rating' ) == 'no' )
    unset( $catalog_orderby['rating'] );

foreach ( $catalog_orderby as $id => $name )
	echo '<option value="' . $id . '">' . esc_attr( $name ) . '</option>';
?>

</select></form>