Calculate number of days between two given dates

Question

Can anyone correct the error in my script to calculate the number of days between 2 dates. The dates have been input through a form, the variable info is as followed:

Answer 1

Here's an easy way:

$depart = strtotime(implode(' ', $_POST['departon']));
$return = strtotime(implode(' ', $_POST['returnon']));

$diff = floor(($return - $depart) / (60 * 60 * 24));

Note: there's only 30 days in June.