Wordpress Cart sorting with woo-extra-product-options plugin

wc_cart_sort.php

add_action( 'woocommerce_cart_loaded_from_session', 'sort_cart_items_alphabetically' );
 
function sort_cart_items_alphabetically() {
     
    global $woocommerce;
     
    // Read Cart Items
    $products_in_cart = array();
    foreach ( $woocommerce->cart->cart_contents as $key => $item ) {
        // sort by title by default
        $products_in_cart[ $key ] = $item['data']->get_title();

        // sort by woo-extra-product-options->custom_item field
        $extra_options = isset($item['thwepof_options']) ? $item['thwepof_options'] : false;
        if($extra_options){
        	$products_in_cart[ $key ] = $extra_options['custom_item']['value'];
		    }
    }
     
    // Sort Cart Items
    natsort( $products_in_cart );
     
    // Assign Sorted Items to Cart
    $cart_contents = array();
    foreach ( $products_in_cart as $cart_key => $v ) {
        $cart_contents[ $cart_key ] = $woocommerce->cart->cart_contents[ $cart_key ];
    }
    $woocommerce->cart->cart_contents = $cart_contents;
     
}