php - how to get a time difference between two dates in ("Y-m-d H:i:s") format?

Question

I'm trying to get the difference between two date-times and return it as a minute. Date & Time are taken in date("Y-m-d H:i:s") format. But it seem i can't get it right. I did it

$time=date("Y-m-d H:i:s");
$time=date("2014-01-13 08:18:25");

$interval = $time->diff($login_time);
$elapsed = $interval->format(%i minutes);
echo $elapsed;

And This is showing a massage "Call to a member function diff() on a non-object"

As I am not good enough with date formatting. So Please help me.

What is the way to go about this?

Answer 1

Try this:

$date1 = new DateTime('2013-01-13 04:10:58');
$datediff = $date1->diff(new DateTime('2013-09-11 10:25:00'));
echo $datediff->i;

For more details see this link : http://www.php.net/manual/en/book.datetime.php