kompass/components/partials/telephon-link.php

<?php
function kompass_get_telephone_link(string $telephonnumber) : string {
	$numberInternational = $telephonnumber;
	if (str_starts_with($numberInternational, '0')) {
		$numberInternational = '+49' . substr($numberInternational,1);
	}
	return '<a href="tel:' . $numberInternational . '">' . $telephonnumber . '</a>';
}

 function kompass_print_telephone_link(string $telephonnumber)
 {
	echo kompass_get_telephone_link($telephonnumber);
 }