使用PHP开发的员工离职申请模块在企业资源计划（ERP）系统中的应用

CREATE TABLE employee_resignation (
    id INT AUTO_INCREMENT PRIMARY KEY,
    employee_id INT,
    reason VARCHAR(255),
    submitted_date TIMESTAMP,
    status ENUM('pending', 'approved', 'rejected')
);

<?php
// 假设这里已经包含了连接数据库的代码和检查用户登录状态的代码

// 查询所有员工离职申请
$sql = "SELECT * FROM employee_resignation";
$result = mysqli_query($conn, $sql);

// 显示员工离职申请列表
while ($row = mysqli_fetch_assoc($result)) {
    echo "申请ID：" . $row['id'] . "<br>";
    echo "员工ID：" . $row['employee_id'] . "<br>";
    echo "离职原因：" . $row['reason'] . "<br>";
    echo "提交日期：" . $row['submitted_date'] . "<br>";
    echo "状态：" . $row['status'] . "<br>";
    echo "<br>";
}
?>

<?php
// 假设这里已经包含了连接数据库的代码和检查用户登录状态的代码

// 检查是否有POST请求提交
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $employeeId = $_POST['employee_id'];
    $reason = $_POST['reason'];

    // 插入员工离职申请到数据库
    $sql = "INSERT INTO employee_resignation (employee_id, reason, submitted_date, status) VALUES ('$employeeId', '$reason', NOW(), 'pending')";
    mysqli_query($conn, $sql);
}
?>

<form method="POST">
    <label for="employee_id">员工ID:</label>
    <input type="text" name="employee_id" id="employee_id" required><br>
    <label for="reason">离职原因:</label>
    <textarea name="reason" id="reason" required></textarea><br>
    <button type="submit">提交</button>
</form>

<?php
// 假设这里已经包含了连接数据库的代码和检查用户登录状态的代码

// 检查是否有POST请求提交
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $id = $_POST['id'];
    $status = $_POST['status'];

    // 更新员工离职申请的状态
    $sql = "UPDATE employee_resignation SET status='$status' WHERE id='$id'";
    mysqli_query($conn, $sql);
}
?>

<form method="POST">
    <label for="id">申请ID:</label>
    <input type="text" name="id" id="id" required><br>
    <label for="status">状态:</label>
    <select name="status" id="status" required>
        <option value="approved">已批准</option>
        <option value="rejected">已拒绝</option>
    </select><br>
    <button type="submit">提交</button>
</form>