PHP を使用して従業員勤怠例外処理プログラムを作成するにはどうすればよいですか?

function checkAttendance($employeeId, $attendanceTime) {
    // 获取员工当天的考勤记录
    $query = "SELECT * FROM attendance WHERE employee_id = '$employeeId' AND DATE(attendance_time) = DATE('$attendanceTime')";
    $result = mysqli_query($connection, $query);
    
    // 检查考勤记录
    if (mysqli_num_rows($result) > 0) {
        $row = mysqli_fetch_assoc($result);
        $attendanceStatus = $row['attendance_status'];
        
        // 检测迟到和早退
        if ($attendanceStatus == '正常') {
            $attendanceHour = date('H', strtotime($attendanceTime));
            $standardHour = date('H', strtotime($row['attendance_time']));
            
            if ($attendanceHour > $standardHour) {
                return '迟到';
            } elseif ($attendanceHour < $standardHour) {
                return '早退';
            } else {
                return '正常';
            }
        } else {
            return $attendanceStatus;
        }
    } else {
        return '缺勤';
    }
}

function handleAttendanceException($employeeId, $attendanceTime) {
    $attendanceStatus = checkAttendance($employeeId, $attendanceTime);
    
    switch ($attendanceStatus) {
        case '迟到':
            // 发送迟到通知给相关人员
            sendNotification($employeeId, '迟到');
            // 记录异常情况
            logException($employeeId, $attendanceTime, $attendanceStatus);
            break;
        case '早退':
            // 发送早退通知给相关人员
            sendNotification($employeeId, '早退');
            // 记录异常情况
            logException($employeeId, $attendanceTime, $attendanceStatus);
            break;
        case '缺勤':
            // 发送缺勤通知给相关人员
            sendNotification($employeeId, '缺勤');
            // 记录异常情况
            logException($employeeId, $attendanceTime, $attendanceStatus);
            break;
        default:
            // 其他情况不做处理
            break;
    }
}

function generateAttendanceReport($employeeId, $startDate, $endDate) {
    $query = "SELECT * FROM attendance WHERE employee_id = '$employeeId' AND DATE(attendance_time) BETWEEN DATE('$startDate') AND DATE('$endDate')";
    $result = mysqli_query($connection, $query);
    
    // 生成考勤报表
    while ($row = mysqli_fetch_assoc($result)) {
        $attendanceTime = $row['attendance_time'];
        $attendanceStatus = $row['attendance_status'];
        
        echo "日期：$attendanceTime, 考勤状态：$attendanceStatus
";
    }
}