- var_dump: documentation ( source)
- mktime: documentation ( source)
- date: documentation ( source)
<?php
$a = @mktime(0, 0, 0, 3, 31, 2014, 1); var_dump($a); var_dump(date('Y-m-d H:i:s', $a));
$b = @mktime(0, 0, 0, 3, 30, 2014, 1); var_dump($b); var_dump(date('Y-m-d H:i:s', $b));
var_dump($a - $b);