[RESOLVED] adding a week onto a date

Desbrina

I'm trying to add a week onto a user defined date

The first date is fine, the problem i'm having is with adding a week onto it

The date is stored into a variable

$date = $_POST['start'];

The format of the date given in the $_POST['start'] is
4 Figure Year-2 Figure Month-2 Figure Day

How do i then add 1 week onto the date?

laserlight

One way is to turn it into a timestamp using say, [man]mktime/man, then use [man]strtotime/man to add the week, and finally get back the original date format with [man]date/man.

Desbrina

i understand how to do the mktime and strtotime bit, but not how to convert them back to date

laserlight

Given $timestamp as the timestamp with a week added, it would be:

$date = date('Y-m-d', $timestamp);

Desbrina

ok, so i've managed to get this, not sure if its right though

$date = $_POST['start'];

	while($i <= $_POST['weeks']) {

		echo $date."<br />";
		$time = mktime($date);
		$new = strtotime($time, '+ 1 week');
		$date = date("Y-m-d", $new);
		++$i;		
	}

The first date is fine but the restaren't

2008-04-08
1970-01-01
1970-01-01
1970-01-01

laserlight

It looks like you did not initialise $i, did not use mktime() correctly, and swapped the arguments for strtotime(). Try:

$date = '2008-04-18';
$weeks = 4;

for ($i = 0; $i < $weeks; ++$i) {
    echo $date . "<br />";
    list($year, $month, $day) = explode('-', $date);
    $time = mktime(0, 0, 0, $month, $day, $year);
    $time = strtotime('+ 1 week', $time);
    $date = date('Y-m-d', $time);
}