Function to redirect the customer to a custom 'thank you' page after placing an order

woo_custom_redirect_after_purchase.php

<?php
/** 
 * Function to redirect the customer to a custom 'thank you' page after placing an order
**/

add_action( 'template_redirect', 'woo_custom_redirect_after_purchase' );
function woo_custom_redirect_after_purchase() {
	global $wp;
	if ( is_checkout() && !empty( $wp->query_vars['order-received'] ) ) {
		wp_redirect( ' http://localhost:8888/subscriptions/custom-thank-you-page/' );
		exit;
	}
}
?>