WooCommerce: sort products from oldest to most recent

Here is a quick snippet that will be handy for many of you! This snippet allows you to create a new default sorting method to list your products from oldest to most recent. To use it, simply add the following code in the file called functions.php in your theme folder:

<?php
// Filters
add_filter( 'woocommerce_get_catalog_ordering_args', 'custom_woocommerce_get_catalog_ordering_args' );
add_filter( 'woocommerce_default_catalog_orderby_options', 'custom_woocommerce_catalog_orderby' );
add_filter( 'woocommerce_catalog_orderby', 'custom_woocommerce_catalog_orderby' );

 // Apply custom args to main query
function custom_woocommerce_get_catalog_ordering_args( $args ) {

	$orderby_value = isset( $_GET['orderby'] ) ? woocommerce_clean( $_GET['orderby'] ) : apply_filters( 'woocommerce_default_catalog_orderby', get_option( 'woocommerce_default_catalog_orderby' ) );

	if ( 'oldest_to_recent' == $orderby_value ) {
		$args['orderby'] = 'date';
		$args['order'] = 'ASC';
	}

	return $args;
}

// Create new sorting method
function custom_woocommerce_catalog_orderby( $sortby ) {

	$sortby['oldest_to_recent'] = __( 'Oldest to most recent', 'woocommerce' );

	return $sortby;
}

Here is the result in the administration: