Get the First or Last Friday in a Month

Question

I\'m trying to write a calendar function like this

function get_date($month, $year, $week, $day, $direction)
{
    ....
}

$week

Answer 1

Just find out what the first and last day of the month in question is (i.e. May 1, 2009 is a Friday and May 31, 2009 is a Sunday) I believe most PHP functions use Monday=0, Sunday=6, thus Friday=4, so you know that Sunday (6) - Friday (4) = 2, then 31-2 = 29, meaning the last friday of this month is on the 29th. For the first Friday, if the number is negative, add 7, if the number is 0, the month starts on Friday.