Leave Application System in PHP and SQLite3 Source Code Free Download


The project is entitled Leave Application System. It is a simple web application that is mainly developed for automating the company's employees' leave application. The source code was developed with PHP and SQLite3 Database. It has a pleasant user interface with the help of Bootstrap Framework. It consists of multiple user-friendly features and functionalities.

How does the Leave Application System work?

The Leave Application System system is a simple web application that automates the management of employees' leave applications and records. The application is only accessible to the management or Human Resource Staff. Here, users can simply add the application records of an employee that automatically computes the leave credits and available. The system requires the management to populate first the listing company employees before proceeding to other features of the system.

Features and Functionalities

Here are the Features and Functionalities of the Leave Application System:

  • Login and Logout
  • Home Page
  • Employee Management
    • List All Employees
    • Add New Employee
    • Update Employee Details
    • Delete Employee
    • Check Employee Annual Leave Credits and Remaining Available Credits
  • Application Management
    • List All Applications
    • Add New Application
    • Update Application Details
    • Delete Application
  • User Management
    • List All Users
    • Add New User
    • Update User Details


Here are the Technologies I used to develop this project:

  • VS Code Editor
  • HTML
  • CSS
  • PHP
  • SQLite3
  • JavaScript
  • jQuery
  • Ajax
  • Bootstrap v5 Framework
  • Google Icons


Here are the snapshots of the page interface of the Leave Application System:

Home Page

Leave Application System in PHP and SQLite3

Employee List

Leave Application System in PHP and SQLite3

Employee Details

Leave Application System in PHP and SQLite3

Application List

Leave Application System in PHP and SQLite3

Application Form

Leave Application System in PHP and SQLite3

The Leave Application System source code zip file is available on this website and it is free to download. This project was mainly developed for educational purposes only and not for commercial use. Feel free to download and modify the source code the way you wanted to meet your own requirements.

How to Run


  • Download and Install any local web server such as XAMPP/WAMP.
  • Download the provided source code zip file. (download button is located below)


  1. Open your XAMPP/WAMP php.ini file and uncomment the sqlite3 extension. Then, save the file.
  2. Open your XAMPP/WAMP's Control Panel and start Apache.
  3. Extract the downloaded source code zip file.
  4. If you are using XAMPP, copy the extracted source code folder and paste it into the XAMPP's "htdocs" directory. And If you are using WAMP, paste it into the "www" directory.
  5. Browse the Leave Application System in a browser. i.e. http://localhost/php-sqlite-leave-application/.

Default Admin Access

Username: admin
Password: sourcecodester&123

That's it! I hope this Leave Application System in PHP and SQLite Source Code will help you with what you are looking for and that you'll find something useful for your current and future PHP Projects.

Explore more on this website for more Tutorials and Free Source Codes.

Enjoy =)

Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.

Virus note: All files are scanned once-a-day by SourceCodester.com for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.


1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.

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