PHP를 사용하여 직원 출석 데이터 확인 프로그램을 작성하는 방법은 무엇입니까?

CREATE TABLE employee_attendance (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(50) NOT NULL,
    employee_id INT NOT NULL,
    attendance_date DATE NOT NULL,
    start_time TIME NOT NULL,
    end_time TIME NOT NULL
);

<?php
function addEmployeeAttendance($name, $employeeId, $attendanceDate, $startTime, $endTime) {
    $conn = new mysqli("localhost", "username", "password", "database");

    if ($conn->connect_error) {
        die("连接数据库失败: " . $conn->connect_error);
    }

    $sql = "INSERT INTO employee_attendance (name, employee_id, attendance_date, start_time, end_time)
            VALUES ('$name', $employeeId, '$attendanceDate', '$startTime', '$endTime')";

    if ($conn->query($sql) === TRUE) {
        echo "员工考勤记录插入成功";
    } else {
        echo "Error: " . $sql . "<br>" . $conn->error;
    }

    $conn->close();
}
?>

<?php
function validateEmployeeAttendance($employeeId, $attendanceDate, $startTime, $endTime) {
    // 获取员工的出勤规则，这里可以根据实际情况从数据库中获取或手动定义

    // 员工的上班时间和下班时间规定
    $workStartTime = "09:00:00";
    $workEndTime = "18:00:00";

    // 检查上班时间是否符合要求
    if ($startTime < $workStartTime) {
        echo "上班时间早于规定时间";
        return false;
    }

    // 检查下班时间是否符合要求
    if ($endTime > $workEndTime) {
        echo "下班时间晚于规定时间";
        return false;
    }

    // 所有验证通过
    echo "考勤时间验证通过";
    return true;
}
?>

<?php
// 获取员工的考勤数据
$employeeId = 12345;
$attendanceDate = '2022-01-01';
$startTime = '08:30:00';
$endTime = '18:30:00';

// 调用验证函数进行数据的验证
validateEmployeeAttendance($employeeId, $attendanceDate, $startTime, $endTime);
?>