Bagaimana untuk menggunakan PHP untuk menulis program pengendalian pengecualian kehadiran pekerja?

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
";
    }
}