18 digit timestamp?

Question

I am working on a system related to tv recordings.

I am parsing the following xml from another system (to which i have no documentation):

Answer 1

With the gmp lib installed in php you can do it like this:

$epoch     = '621355968000000000';
$newtime   = gmp_sub($dateTime, $epoch);
$newtime   = gmp_div($newtime, '10000000');
$timestamp = gmp_strval($newtime);

and now you got a date:

echo date('Y-m-d H:i:s', $timestamp);