Translating year and week to date

[Anon]

Hello,

I know only the year, week, and day of the week, and I need to get the date (year-month-day). Is there an easy way of doing this?

Best Regards,
Ville

[Anon]

Lessee.... OTTOMH:

$day = day of week: 0=Sunday, 1=Monday ... 6=Saturday
$week= number of week (starting at 1)
$year= year (duh!)

Eg:
$day = 2; // Tuesday
$week = 1; // First Week
$year = 2002;
should give 2002-01-01.

// Start of year is:
$startofyear = mktime(0,0,0,1,1,$year);

// First day of year is:
$firstday=date('w',$startofyear);

// How many days since the start of the year?
// ($week-1) fuul weeks after the start of the year, plus $day, less $firstday
$now = $startofyear+(7($week-1)+$day-$firstday)86400;

echo date('Y-m-d',$now);
echo "\n";

[jayrod_84]

what format would you store this in if you where going to update a database field that is of type datetime?

[Anon]

Yes, this was what I needed. Thank you!