PHP code

<?php
$date1 = "1998-08-20";
$date2 = "2016-08-18";
$year = 1998;
$age = date("Y") - $year;

$diff = abs(strtotime($date2) - strtotime($date1));

$years = floor($diff / (365*60*60*24));
$months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24));
$days = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24)/ (60*60*24));
$minutes = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24 - $days*60*60*24)/ (60*60));
$seconds =  floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24 - $days*60*60*24 - $minutes*60*60)/(60));
echo "i will be " .floor($age), " in " .floor($days), " days " .floor($minutes), " minutes, and " .floor($seconds), " seconds.";
?>