Description:
------------
I was attempting to strtotime to find the last (specific) day of the month.
Example: Last Monday of May

But it returns false. I ended up taking a different approach but this would have 
been a nice feature.

Also tried: Last Monday April
Which did not return the results I was expecting.

Maybe we can get a little more documentation on this function and what terms it 
accepts? (If this exists, I was unable to find it)

Test script:
---------------
$f = "Y-m-d";$now = 1267571715; // 2010-03-02
echo "<pre>";
echo date($f, strtotime("last Monday",$now))."\n"; 
echo date($f, strtotime("last Monday in March",$now))."\n";
echo date($f, strtotime("last Monday of March",$now))."\n";
echo date($f, strtotime("last Monday April",$now))."\n";
echo date($f, strtotime("last Monday in April",$now))."\n";
echo date($f, strtotime("last Monday of April",$now))."\n";
echo "</pre>";

Expected result:
----------------
2010-03-01
2010-03-29
2010-03-29
2010-04-26
2010-04-26
2010-04-26

Actual result:
--------------
2010-03-01 (ok)
1969-12-31 (nothing returned)
1969-12-31 (nothing returned)
2010-03-29 (unexpected, but valid)
1969-12-31 (nothing returned)
1969-12-31 (nothing returned)