/** * Calculates a difference between two dates. * @return string Something like this: 1 year. 2 mon. 6 day. 4 hours. 21 min. 10 sec. */ public static function date_period_text($date_start, $date_finish) { $result = Daemon::date_period($date_start, $date_finish); $str = ''; if ($result[5] > 0) { $str .= $result[5] . ' year. '; } if ($result[4] > 0) { $str .= $result[4] . ' mon. '; } if ($result[3] > 0) { $str .= $result[3] . ' day. '; } if ($result[2] > 0) { $str .= $result[2] . ' hour. '; } if ($result[1] > 0) { $str .= $result[1] . ' min. '; } if ($result[0] > 0 || $str == '') { $str .= $result[0] . ' sec. '; } return rtrim($str); }