Fatal error: Call to undefined function seconds2human()

Hi Guys,

I have a strange issue and can't get it to work properly.

Here is the code that calculate the time in minutes between two dates with a 5 days work week and 8 hours a day.
The script runs properly and calculate the right time in minutes.

Here is the code:

$begintime = '2013-17-06  12:00';
$endtime = '2013-19-06  10:00';

$start = new DateTime($begintime);
$end = new DateTime($endtime);

    $oneday = new DateInterval('P1D');
    $hours = 0; // start at 0

    foreach(new DatePeriod($start, $oneday, $end->add($oneday)) as $day)
    {
        if($day->format('N') < 5) // weekday, 'N' number days 1 (mon) to 7 (sun)
        {
            $hours += 8; // add 8-hr workday
        }
    }

   echo $hours;
  

    date_default_timezone_set("Europe/Amsterdam");
    $startDate=strtotime($begintime);
    $endDate = strtotime($endtime);

   seconds2human(work_hours_diff($startDate,$endDate));

    function seconds2human($ss) {
        $s = $ss%60;
        $m = floor(($ss%3600)/60);
        $h = floor(($ss)/3600);
        $h_total = floor(($ss)/60);

mysql_query("UPDATE table SET minutes = '$h_total' WHERE id = '$id'");
echo mysql_error();


        return "$h hours, $m minutes, $s seconds, totaal: $h_total Minuten";

    }

    function work_hours_diff($date1,$date2) {
        if ($date1>$date2) {
            $tmp=$date1;
            $date1=$date2;
            $date2=$tmp;
            unset($tmp);
            $sign=-1;
        } else $sign = 1;
        if ($date1==$date2) return 0;

        $days = 0;
        $working_days = array(1,2,3,4,5,6,7); // Monday-->Sunday
        $working_hours = array(9.5, 18); // from 9:30 to 18:00
        $current_date = $date1;

        $beg_h = floor($working_hours[0]);
        $beg_m = ($working_hours[0]*60)%60;
        $end_h = floor($working_hours[1]);
        $end_m = ($working_hours[1]*60)%60;

        //In case date1 is on same day of date2
        if (mktime(0,0,0,date('n', $date1), date('j', $date1), date('Y', $date1))==mktime(0,0,0,date('n', $date2), date('j', $date2), date('Y', $date2))) {
            //If its not working day, then return 0
            if (!in_array(date('w', $date1), $working_days)) return 0;

            $date0 = mktime($beg_h, $beg_m, 0, date('n', $date1), date('j', $date1), date('Y', $date1));
            $date3 = mktime($end_h, $end_m, 0, date('n', $date1), date('j', $date1), date('Y', $date1));

            if ($date1<$date0) {
                if ($date2<$date0) return 0;
                $date1 = $date0;
                if ($date2>$date3) $date2=$date3;
                return $date2-$date1;
            }
            if ($date1>$date3) return 0;
            if ($date2>$date3) $date2=$date3;
            return $date2-$date1;
        }

        //setup the very next first working time stamp
        if (!in_array(date('w',$current_date) , $working_days)) {
            // the current day is not a working day

            // the current time stamp is set at the beginning of the working day
            $current_date = mktime( $beg_h, $beg_m, 0, date('n',$current_date), date('j',$current_date), date('Y',$current_date) );

            // search for the next working day
            while ( !in_array(date('w',$current_date) , $working_days) ) {
                $current_date += 24*3600; // next day
            }
        } else {
            // check if the current timestamp is inside working hours
            $date0 = mktime( $beg_h, $beg_m, 0, date('n',$current_date), date('j',$current_date), date('Y',$current_date) );
            // it's before working hours, let's update it
            if ($current_date<$date0) $current_date = $date0;

            $date3 = mktime( $end_h, $end_m, 0, date('n',$current_date), date('j',$current_date), date('Y',$current_date) );

            if ($date3<$current_date) {
                // outch ! it's after working hours, let's find the next working day
                $current_date += 24*3600; // the day after
                // and set timestamp as the beginning of the working day
                $current_date = mktime( $beg_h, $beg_m, 0, date('n',$current_date), date('j',$current_date), date('Y',$current_date) );
                while ( !in_array(date('w',$current_date) , $working_days) ) {
                    $current_date += 24*3600; // next day
                }
            }
        }

        // so, $current_date is now the first working timestamp available...

        // calculate the number of seconds from current timestamp to the end of the working day
        $date0 = mktime( $end_h, $end_m, 0, date('n',$current_date), date('j',$current_date), date('Y',$current_date) );
        $seconds = $date0-$current_date;

        // calculate the number of days from the current day to the end day

        $date3 = mktime( $beg_h, $beg_m, 0, date('n',$date2), date('j',$date2), date('Y',$date2) );
        while ( $current_date < $date3 ) {
            $current_date += 24*3600; // next day
            if (in_array(date('w',$current_date) , $working_days) ) $days++; // it's a working day
        }
        if ($days>0) $days--; //because we've already count the first day (in $seconds)

        // check if end's timestamp is inside working hours
        $date0 = mktime( $beg_h, $beg_m, 0, date('n',$date2), date('j',$date2), date('Y',$date2) );
        if ($date2<$date0) {
            // it's before, so nothing more !
        } else {
            // is it after ?
            $date3 = mktime( $end_h, $end_m, 0, date('n',$date2), date('j',$date2), date('Y',$date2) );
            if ($date2>$date3) $date2=$date3;
            // calculate the number of seconds from current timestamp to the final timestamp
            $tmp = $date2-$date0;
            $seconds += $tmp;
         }

        // calculate the working days in seconds
        $seconds += 3600*($working_hours[1]-$working_hours[0])*$days;

        return $sign * $seconds;


 }  

But when I add this:

$query=mysql_query("SELECT * FROM table WHERE closed='yes'");
while($row=mysql_fetch_array($query)){

//The whole code above

}  

I want to do this to change it like this to get all rows together

$start = new DateTime($begintime);
to 
$start = new DateTime($row[begin_time]);  

It give a error:

Fatal error: Call to undefined function seconds2human() 

It only give this error when i place the { and the } above and after the code.
But I need it otherwise the $row values doesn't work.

The problem isn't the $row[begin_time] value because when I echo it, it works fine. Its just the { } thats buggin me

Hope its something simple, but Im busy with it for last 8 hours and still doesn't work.

Any idea's to get it fixed?