PHP 4.0 Bug #9076: GregorianToJD function returns incorrect values

From: basil.hussain@specialreserve.net Operating system: RedHat Linux 6.2 (kernel 2.2.18-22) PHP version: 4.0.4pl1 PHP Bug Type: Calendar related Bug description: GregorianToJD function returns incorrect values The GregorianToJD Calender function returns incorrect results. As far as I can tell, this applies to the GregorianToSdn internal function in the PHP source. There's not really any point putting a sample PHP script here, as it's the algorithm that seems to be at fault. I took two specific cases and worked through the algorithm by hand (i.e. pen and paper). Here are the results: 2nd February 2001 (2/2/2001) = 2451943 7th June 1980 (7/6/1980) = 2473618 As I understand it, the Julian Day Count is a uniform count of days from some time around 4714 BC. Now, how can 2/2/01 be a lesser number of days than 7/6/80? I have no idea what the correct results for these test cases are, nor any idea what particular part of the algorithm is wrong. It's just wrong somewhere! -- Edit Bug report at: http://bugs.php.net/?id=9076&edit=1