produce xml safe stuff, same as ENT_XML1 but works with php 5.3

xmlsafe.php

<?php
function xmlsafe($string) {
	$replace = 	array(
		'"'=> "&quot;",
        "&" => "&amp;",
        "'"=> "&apos;",
        "<" => "&lt;",
        ">"=> "&gt;"
        );
	return strtr($string, $replace);

}