How to calculate days till some point in future in PHP?

Question

I've a date like this: 2011-01-28 00:37:15. What would be the most efficient way to get days from now till this date? I want like number of full days till this date so I could display message: "after X days" rather than showing ugly date.

I am using php 5.2.6.

Answer 1

<?

$date = "2011-01-28 00:37:15";
$date_2 = date("Y-m-d H:i:s");
$date_diff=(strtotime($date)-strtotime($date_2)) / 86400;

?>

Answer 2

Have a look at http://de.php.net/manual/de/datetime.diff.php (PHP >=5.3.0)

This will return you a DateIntervall wich has a public attribute days