PHP这个日期有多少天了？ [关闭]

Im trying to work out how many days old is a date in my database.

For example with this date:

$postdate = '2013-12-19';

I want it to work out that it is 1 day old. If it is todays date then it should be 0.

How can i do this in PHP?

Thanks

<?php
$a = new \DateTime('2013-12-19');
$b = new \DateTime;

echo $a->diff($b)->days; // => 1

Try this

$postdate = '2013-12-20';
$today = date('Y-m-d'); // today date
$diff = strtotime($today) - strtotime($postdate);
echo $days = (int)$diff/(60*60*24);

Try this:

try {
    $db_date = new DateTime($postdate);
    $today = new DateTime();
    $interval = $db_date->diff($today);
    echo $interval->format('%R%a days');
} catch (Exception $e) {
    echo $e->getMessage();
}