php datetime diff days code example

Example 1: php get day diff

$now = time(); // or your date as well
$your_date = strtotime("2010-01-31");
$datediff = $now - $your_date;

echo round($datediff / (60 * 60 * 24));

Example 2: whats the difference between using date function and DATETime in php

function weeknumber($ddate) {
    $date = new DateTime($ddate);

    return $date->format('W');
}