/**
* 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);
}
