====== Date and time handling ======
  * [[http://php.net/manual/en/function.date.php|date()]] - format a readable date from a timestamp
  * [[http://php.net/manual/en/function.time.php|time()]] - current time timestamp
  * [[http://php.net/manual/en/function.strtotime.php|strtotime()]] - convert a date to a timestamp