Description:
------------
parsing of relative date/time string "midnight first day last month" returns a wrong result in php 5.2.17

Test script:
---------------
<?php

print_r(date_create('midnight first day last month'));
print $d->format('Y-m-d H:i:s') . "\n";
print date('Y-m-d H:i:s', strtotime('midnight first day last month'));


Expected result:
----------------
// relative to current date/time - 2011-01-13 17:23

DateTime Object
(
    [date] => 2010-12-01 00:00:00
    [timezone_type] => 3
    [timezone] => Europe/Berlin
)
2010-12-01 00:00:00
2010-12-01 00:00:00


Actual result:
--------------
// relative to current date/time - 2011-01-13 17:23

DateTime Object
(
)
2010-12-14 00:00:00
2010-12-14 00:00:00