Kimai_Database_Mysql::get_time_users PHP Method

    public function get_time_users($start, $end, $users = null, $customers = null, $projects = null, $activities = null)
    {
        $start = MySQL::SQLValue($start, MySQL::SQLVALUE_NUMBER);
        $end = MySQL::SQLValue($end, MySQL::SQLVALUE_NUMBER);
        $p = $this->kga['server_prefix'];
        $whereClauses = $this->timeSheet_whereClausesFromFilters($users, $customers, $projects, $activities);
        $whereClauses[] = "{$p}users.trash=0";
        if ($start) {
            $whereClauses[] = "end > {$start}";
        }
        if ($end) {
            $whereClauses[] = "start < {$end}";
        }
        $query = "SELECT start, end, userID, (end - start) / 3600 * rate AS costs, fixedRate\n              FROM {$p}timeSheet\n              JOIN {$p}projects USING(projectID)\n              JOIN {$p}customers USING(customerID)\n              JOIN {$p}users USING(userID)\n              JOIN {$p}activities USING(activityID) " . (count($whereClauses) > 0 ? " WHERE " : " ") . implode(" AND ", $whereClauses) . " ORDER BY start DESC;";
        $result = $this->conn->Query($query);
        if (!$result) {
            $this->logLastError('get_time_users');
            return array();
        }
        $rows = $this->conn->RecordsArray(MYSQLI_ASSOC);
        if (!$rows) {
            return array();
        }
        $arr = array();
        $consideredStart = 0;
        $consideredEnd = 0;
        foreach ($rows as $row) {
            if ($row['start'] <= $start && $row['end'] < $end) {
                $consideredStart = $start;
                $consideredEnd = $row['end'];
            } elseif ($row['start'] <= $start && $row['end'] >= $end) {
                $consideredStart = $start;
                $consideredEnd = $end;
            } elseif ($row['start'] > $start && $row['end'] < $end) {
                $consideredStart = $row['start'];
                $consideredEnd = $row['end'];
            } elseif ($row['start'] > $start && $row['end'] >= $end) {
                $consideredStart = $row['start'];
                $consideredEnd = $end;
            }
            $time = (int) ($consideredEnd - $consideredStart);
            $costs = (double) $row['costs'];
            $fixedRate = (double) $row['fixedRate'];
            if (isset($arr[$row['userID']])) {
                $arr[$row['userID']]['time'] += $time;
                if ($fixedRate > 0) {
                    $arr[$row['userID']]['costs'] += $fixedRate;
                } else {
                    $arr[$row['userID']]['costs'] += $costs;
                }
            } else {
                $arr[$row['userID']]['time'] = $time;
                if ($fixedRate > 0) {
                    $arr[$row['userID']]['costs'] = $fixedRate;
                } else {
                    $arr[$row['userID']]['costs'] = $costs;
                }
            }
        }
        return $arr;
    }