/**
* @param int $time
* @param int|null $from
* @return null|string
*/
public static function timeAgo($time, $from = NULL)
{
$from = DateTime::from($from);
$time = DateTime::from($time);
if ($from === NULL) {
$from = time();
}
$diff = $from->getTimestamp() - $time->getTimestamp();
if ($diff < 0) {
return NULL;
}
$callback = self::$timeAgoCallback;
if ($diff < 60) {
return $callback('now', 0);
} else {
if ($diff < 3601) {
return $callback('minutes', floor($diff / 60));
} else {
if ($diff < 86401) {
return $callback('hours', floor($diff / 3600));
} else {
if ($diff < 2629801) {
return $callback('days', floor($diff / 86400));
} else {
if ($diff < 31536001) {
return $callback('months', floor($diff / 2629800));
} else {
return $callback('years', floor($diff / 31536000));
}
}
}
}
}
}
