First date of a week

Question

I want a First Day Of a week say I have 45th week. Now I want to have date of the first sunday of this week. Can any one suggest me how I can go about this ?

Thank

Answer 1

Searching around a bit, the most suggested is:

$year = "2009"; // date("Y");
$week = "45"; // date("W");

$firstDayOfWeek = strtotime($year."W".str_pad($week,2,"0",STR_PAD_LEFT));

print("The first day of week ".$week." of ".$year." is ".date("D, d-m-Y",$firstDayOfWeek));

Basically this comes down to letting strtotime do the work for you. You fill in "2009W45" and it'll retrieve the date for you. Pitfall here is that the week needs to be in a 2 digit format. So week 1 needs to be 01, hence the str_pad to zero-fill it.