Description:
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When converting weeks and days to a date using strtotime, some months return the wrong dates. For instance, strtotime("first thursday", mktime(0,0,0,11,1,2009)) returns 11/4/2009, which is a wednesday. There are also issues using "last".

This seems to be happening with November 2009. I am not sure about other years or other months. I think I had issues there as well, but infrequently. I tried seeing if the issue is with any month when the first day of the month is sunday, but it does not appear to be the case.

I am creating a new function to handle strtotime in this manner, because I found more issues with using this function and creating a series of dates that are incremented by a year.


Reproduce code:
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public function getDateFromWeekAndDayOfMonth($d, $m, $y){
$fistDayOfMonth = mktime(0, 0, 0, $m, 1, $y)
$firstWeekForDay = strtotime("first " . $d, $fistDayOfMonth);
return $firstWeekForDay;
}


Expected result:
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For the First Thursday in November 1, 2009, I expect to have the datetime for 11-5-2009.

Actual result:
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11-4-2009