<?php

function readablestorageunit($unitchar=NULL) {

        if ($unitchar == NULL) {
                return "";
        }

        switch ($unitchar) {
                case "B":
                        return "bytes";
                        break;
                case "K":
                        return "KB (Kilobytes)";
                        break;
                case "M":
                        return "MB (Megabytes)";
                        break;
                case "G":
                        return "GB (Gigabytes)";
                        break;
                case "T":
                        return "TB (Terabytes)";
                        break;
                case "P":
                        return "PB (Petabytes)";
                        break;
                case "E":
                        return "EB (Exabytes)";
                        break;
                }
        return "";
}

// if no argument given, assume $courseid=-1 as $courseid = 0 means sitewide default
function getquotadetails($courseid=-1) {
        global $CFG, $tablename;

        $courseid = (int) $courseid;

        if ($courseid == -1 || $courseid < 0) {
                return NULL;
        }

        $details = get_record($tablename, 'courseid', $courseid);
        if (empty($details)) {
                return NULL;
        }
        else {
                return $details;
        }
}

?>