How to implement employee leave management function through PHP?

How to implement employee leave management function through PHP?

As the size of an enterprise expands and the number of employees increases, good employee leave management becomes increasingly important. In order to better manage employee leave matters, allow employees to apply for leave conveniently, and allow managers to approve, record and track leave in a timely manner, we can use PHP to implement employee leave management functions.

Before we begin, we first need to build a PHP-based web application. We can use any PHP framework, such as Laravel, Symfony, or manually build a PHP application ourselves.

1. Database design

First, we need to design a database to store employee information, leave applications and approval records. Three tables can be created to store this data: employees table (employees), leave application table (leave_applications) and approval record table (approval_records).

The employees table (employees) contains the following fields: id (employee ID, primary key), name (employee name), position (position), etc.

The leave application form (leave_applications) contains the following fields: id (leave application ID, primary key), employee_id (employee ID, foreign key), start_date (start date), end_date (end date), reason (leave reason) )wait.

The approval record table (approval_records) contains the following fields: id (record ID, primary key), leave_application_id (leave application ID, foreign key), manager_id (approval ID), status (approval status), comment (remarks) )wait.

2. Employee Vacation Application

First, create an employee vacation application page in the web application and let employees fill in the vacation-related information, including the start date, end date and reason for the vacation. . Pass the submitted data to the server-side PHP processing script.

In the PHP processing script, you first need to verify and filter the data submitted by the user to ensure the validity and security of the data. Then, insert the leave application information into the leave application form (leave_applications), and generate a unique leave application ID. An example is as follows:

$start_date = $_POST['start_date'];
$end_date = $_POST['end_date'];
$reason = $_POST['reason'];

// 确保日期格式正确
$start_date = date('Y-m-d', strtotime($start_date));
$end_date = date('Y-m-d', strtotime($end_date));

// 插入休假申请
$query = "INSERT INTO leave_applications (employee_id, start_date, end_date, reason)
          VALUES ('$employee_id', '$start_date', '$end_date', '$reason')";
$result = mysqli_query($connection, $query);

3. Employee leave approval

Create a page for employee leave approval in the web application, which can only be accessed by managers. Managers can view all pending leave requests and approve or deny them. After the administrator selects the corresponding operation, the operation is submitted to the PHP processing script on the server side.

In the PHP processing script, you first need to verify and filter the data submitted by the user to ensure the validity and security of the data. Then, the approval status and remarks in the approval record table (approval_records) are updated based on the operations of the administrator. An example is as follows:

$leave_application_id = $_POST['leave_application_id'];
$status = $_POST['status'];
$comment = $_POST['comment'];

// 更新审批记录状态和备注
$query = "UPDATE approval_records
          SET status = '$status', comment = '$comment'
          WHERE leave_application_id = '$leave_application_id'";
$result = mysqli_query($connection, $query);

4. View employee leave records

Create a page for viewing employee leave records in the web application so that employees can view their own leave records. This page needs to display the employee's leave start date, end date, approval status and remarks information.

In the PHP processing script, query the employee's leave records from the leave application form (leave_applications) and the approval record table (approval_records) based on the employee's ID, and display them on the Web page. An example is as follows:

$employee_id = $_SESSION['employee_id'];

// 查询员工的休假记录
$query = "SELECT a.start_date, a.end_date, r.status, r.comment
          FROM leave_applications a
          INNER JOIN approval_records r ON a.id = r.leave_application_id
          WHERE a.employee_id = '$employee_id'";
$result = mysqli_query($connection, $query);

// 显示员工的休假记录
while ($row = mysqli_fetch_assoc($result)) {
    echo "开始日期：" . $row['start_date'] . "<br>";
    echo "结束日期：" . $row['end_date'] . "<br>";
    echo "审批状态：" . $row['status'] . "<br>";
    echo "备注：" . $row['comment'] . "<br><br>";
}

Through the above steps, we can implement a simple employee leave management function. Of course, the above code is just a simplified example, and more business logic and security issues need to be considered in actual development.

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