ChangeLog documents new constructor feature.  I've not
seen any documentation on how this works, however running
some old scripts through 3.0.3 fails:
<?
class test {
        function test($what) {
        }
}

$obj = new test;
?>
The above under 3.0.1 works fine.  3.0.3 gives:
Warning: Missing argument 1 in call to test() in 303test.php3 on line 3

Is it just my luck that I used functions with the same name as the class?  Should I edit all my source?