<?
    function counttime($start, $stop = false, $display = "combined") {
        # version 1.3
        # Author: Jonas Eklundh Communication AB
        
        require_once ("adodb_time.php");
        if (!$stop) $stop = adodb_date("Y-m-d");
        $sec["seconds"] = 1;
        $sec["minutes"] = $sec["seconds"]*60;
        $sec["hours"] = $sec["minutes"]*60;
        $sec["days"] = $sec["hours"]*24;
        $sec["weeks"] = $sec["days"]*7;
        $sec["months"] = $sec["days"]*28; # 28 so "feb 01-feb 28" is considered one month
        $sec["years"] = $sec["days"]*365;; # 365 includes leap years
        $sec = array_reverse($sec);
        
        # make sure that $from is always the earliest date
        $from = $stop > $start ? $start : $stop;
        $to = $stop > $start ? $stop : $start;
        
        # extract the parts of each date, for adodb_mktime
        $fp = split("[ :-]", $from);
        $tp = split("[ :-]", $to);
        
        # get time
        $target = adodb_mktime($tp[3], $tp[4], $tp[5], $tp[1], $tp[2], $tp[0]);
        $source = adodb_mktime($fp[3], $fp[4], $fp[5], $fp[1], $fp[2], $fp[0]);
        
        # the difference, in seconds, between the two dates
        $diff = $target-$source;
        if ($display == "combined") {
            if ($diff >= $sec["years"]) {
                # Ok, the time is longer than at least one year
                for ($y = adodb_date("Y", $source);$y <= adodb_date("Y", $target);$y++) {
                    $day = adodb_date("m-d", $source) == "02-29" ? 28 : $fp[2]; # considering feb 29, since we can't use it consistently
                    $comptime = adodb_mktime($fp[3], $fp[4], $fp[5], $fp[1], $day, $y); #stepping a full year into the future. i.e. same date
                    if ($comptime > $source && $comptime <= $target) {
                        # if comptime is within the range, a full year has elapsed
                        $result["years"]++; # so we add a year to the result
                        $diff = $target-$comptime; # and remove the time we're at from the diff
                    }
                }
            }
            if ($diff >= $sec["months"]) {
                # Ok, the time left is at least one month long
                $starttime = $target-$diff; # This is the second we're starting on
                for ($i = $starttime;$i <= $target;$i+= $sec["days"]) {
                    $comp_day = adodb_date("d", $source); # This is the day of month we're comparing against
                    if ($comp_day > adodb_date("t", $i)) $comp_day = adodb_date("t", $i); #making sure we don't compare 31 jan to 31 feb
                    if (date("d", $i) == $comp_day && $i != $starttime) {
                        # It's the same day of month, so one month has passed
                        # So we subtract the aggregated time from the diff
                        $hour = $fp[3] ? $fp[3] : "00"; # if hour is specified, we need to use that as well
                        $diff = $target-strtotime(adodb_date("Y-m-$comp_day $hour:i", $i)); # setting diff to the amount of seconds so far
                        $result["months"]++; # and add one moth to the result.
                        
                    }
                }
            }
            # now diff days and hours
            foreach(split(",", "days,hours,minutes") as $type) {
                if ($diff >= $sec[$type]) {
                    $result[$type] = floor($diff/$sec[$type]);
                    $diff-= $result[$type]*$sec[$type];
                }
            }
            return $result ? $result : false;
        }
        elseif($sec[$display]) {
            return (int)(($target-$source) /$sec[$display]);
        }
    }

?>