Description:
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Compare dates impossible with mktime. All if-statements return true, no matter the date.

Reproduce code:
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<?php
$event_fromdate = date("Y-m-d", mktime(0, 0, 0, 5, 1, 2005));
$event_todate = date("Y-m-d", mktime(0, 0, 0, 5, 10, 2005));
if ($event_todate >= $event_formdate) {echo ("<p>equal or larger</p>\n");}else {echo ("<p>smaller</p>\n");}

$event_todate = date("Y-m-d", mktime(0, 0, 0, 5, 1, 2005));
if ($event_todate >= $event_formdate) {echo ("<p>equal or larger</p>\n");}else {echo ("<p>smaller</p>\n");}

$event_todate = date("Y-m-d", mktime(0, 0, 0, 4, 10, 2003));
if ($event_todate >= $event_formdate) {echo ("<p>equal or larger</p>\n");}else {echo ("<p>smaller</p>\n");}
?>

Expected result:
----------------
equal or larger

equal or larger

smaller


Actual result:
--------------
equal or larger

equal or larger

equal or larger