Different stock status names for your WooCommerce product detail page

stock_status_names.php

<?php

/*
Using this function you can use different values on the frontend while keeping the original strings or translations.
How to use:
Place the PHP code below into the functions.php file from your WordPress child theme.
If you like, change the strings inside the quotes for the $status variables.

The action hook will place the information below the add to cart button (based on the original WooCommerce template files). 
*/

function add_stock_status_info() {
	global $product;
	$stock_status = $product->get_stock_status();
	switch ($stock_status) {
		case 'instock':
		$status = 'Uit voorraad leverbaar';
		break;
		case 'onbackorder':
		$status = 'Levertijd 3-5 werkdagen';
		break;
		case 'outofstock':
		$status = 'Niet meer leverbaar';
		break;
		default:
		$status = '';
		break;
	}
	if ($status) echo '
	<div class="voorraad">'.$status.'</div>';
}
add_action('woocommerce_single_product_summary', 'add_stock_status_info', 30);