PHP Pretty Time addaptation.

pretty_time.php

/**
 * @desc Pretty time
 */
function pretty_time($_DATE_FROM, $_DATE_TO, $_LANG)
{
  $SECOND = 1;
	$MINUTE = 60 * $SECOND;
	$HOUR = 60 * $MINUTE;
	$DAY = 24 * $HOUR;
	$MONTH = 30 * $DAY;

  $delta = strtotime($_DATE_TO) - strtotime($_DATE_FROM);

  if ($delta < 0)
  {
    return $_LANG['time_the_future'];
  }
  if ($delta < 1 * $MINUTE)
  {
		if($delta == 0)
			return $_LANG['time_just_now'];
		else if($delta == 1)
			return $_LANG['time_a_second_ago'];
		else
    	return str_replace("%CT%", $delta, $_LANG['time_seconds_ago']);
  }
  if ($delta < 2 * $MINUTE)
  {
    return $_LANG["time_a_minute_ago"];
  }
  if ($delta < 45 * $MINUTE)
  {
      return str_replace("%CT%", floor($delta / $MINUTE), $_LANG['time_minutes_ago']);
  }
  if ($delta < 90 * $MINUTE)
  {
    return $_LANG["time_an_hour_ago"];
  }
  if ($delta < 24 * $HOUR)
  {
    return str_replace("%CT%", floor($delta / $HOUR), $_LANG['time_hours_ago']);
  }
  if ($delta < 48 * $HOUR)
  {
    return $_LANG["time_yesterday"];
  }
  if ($delta < 30 * $DAY)
  {
    return str_replace("%CT%", floor($delta / $DAY), $_LANG['time_days_ago']);
  }
  if ($delta < 12 * $MONTH)
  {
    $months = floor($delta / $DAY / 30);
    return $months <= 1 ? $_LANG["time_a_month_ago"] : str_replace("%CT%", $months, $_LANG['time_months_ago']);
  }
  else
  {
    $years = floor($delta / $DAY / 365);
    return $years <= 1 ? $_LANG["time_a_year_ago"] : str_replace("%CT%", $years, $_LANG['time_years_ago']);
  }
}