<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title></title>
</head>
<body>
<?php
$num = 0;
echo("{$num}<br/>");
my_inc($num);
echo("{$num}<br/>");
my_inc($num);
echo("{$num}<br/>");
my_inc($num);
echo("{$num}<br/>");
function my_inc(&$val) {
$val++;
return 0;
}
?>
</body>
</html>
