Billing System in PHP CodeIgniter with Source Code

A fully functional project based on Online Billing System which uses PHP Language with CodeIgniter Web Framework. Following PHP CodeIgniter project contains all the essential features which can be in use for the final-year IT students for their college projects. It has a number of features that will allow users to manage product billings. This system as well as the web application’s concept is all clear. It’s the same as real-life scenarios and well-implemented on it. To download free Billing Management system project in PHP MySQL with source code files, please scroll down to the bottom of this post for the Download button.

About Billing System PHP MySQL Project

In particular, this Online Billing Management System project in PHP CodeIgniter focuses mainly on keeping track of the product bills. To be more precise, the system helps to keep track of sales and purchase records with respect to available items. Also, the system displays all the sales and purchase reports. In addition, the system allows managing customers, items, daily cash, and more. Evidently, this project contains an admin panel with an employee panel as well. In an overview of this web application, an employee has a minor role and control over the system. He/she can view overall item records. Here, an employee can list out sales and purchase records. In short, an employee can only view records, but cannot make changes to them.

Administrator Panel and Purchase Management

An administrator has full control over the system. He/she can manage items, groups, daily transactions, customers, and so on. Here, each and every section has its own respective details such as name and other important details. Here, an admin first has to set up item and customer details for maintaining further transactions. Second, the user can manage the transactions like purchasing items. Moving towards the transaction section, allows the admin to manage purchase and sale products. To be more precise, the purchase section plays an important role in maintaining the total stock of an item. In fact, the user has to select a supplier, item and enter a quantity, pricing details for purchasing items. As a result, the system automatically calculates the total amount with certain charges.

Sales Management

On one hand, the administrator can simply proceed towards maintaining their sales figure. In order to manage sales, he/she has to select any of the available customers, items, and quantity. In the end, the system displays the total amount for the particular sales transaction. Here, an admin can enter the received amount with other details like due dates and freight. In fact, this whole system runs with allowing dues amount too. Meaning, the customer can leave a certain amount in dues during the billing section. With it, all the dues amounts with their respective customers’ names can be seen on the administrator’s dashboard. And, as soon as the billing section gets completed the system automatically generates an invoice with all the necessary details.

Dues, Sales Return, Reminder, Payment Receipt

Talking more about the dues section, the user can later select any of the dues records and make changes to them. Speaking of changes, an admin can enter the remaining paid amount, remarks and list it out as dues received. As a result, the system clears out the requested dues. With sales management, there must also come sales return in favor. So, the user can list out all the sales items to return by providing customer, item details with quantity. With it, the user can generate payment receipts manually at any time by providing all the necessary details to the system. In addition to it, he/she can set up a number of reminders which kinda works as a notification throughout the whole system. For this, the admin has to provide text, reminder types such as once, weekly or monthly.

Item Replacement and Requirements

Moreover, these both item replacement and requirement sections work whenever the user wants some replacements or requires more of them. In dept, the item replacement is somehow similar to sales return. This section contains information such as the name of the item, party name, item quantity, and remarks. Similarly, all the required products for the organization can be listed under the requirements section. For the management of this portion, the user has to enter details like item name, rate per piece, with customer/supplier name. Although these sections might not be as important as the previous one, still it can play a major role in the proper flow of the system.

Reports and Complaint Section

On the other hand, the system generates a number of transaction reports. In fact, the admin can list out ledger, item ledger, collection, sales & purchase report. In addition to it, there are more sections such as purchase analysis, items purchased and sold, purchase log, dues, and sales frequency under it. For each section, the user needs to select dates from to current one. And as a result, the system generates reports in table form where the user can request to export data in excel format. Moving towards complaint management, the administrator can simply list out all the complaints from the customers with their own details too. Besides, there are tool portions where the admin can backup data, duplicate records, and much more.

Last but not least, a clean and simple dashboard is presented with various color combinations for greater user experience while using this Online Billing Management System Project in PHP MySQL CodeIgniter. For its UI elements, a free open-source CSS framework; Bootstrap is on board with some Vanilla CSS too. Presenting a new Billing System Project in PHP MySQL which includes an admin panel that contains all the essential features to follow up, and a knowledgeable resource for learning purposes.

Available Features:

  • Admin Panel
  • Setup Organization
  • Product Management
  • Customer Management
  • Manage Item Opening Balance
  • Purchase and Sales
  • Sales Return
  • Payment Receipt
  • Dues Management
  • Item Replacements
  • Item Requirements
  • Set Reminders
  • Manage Daily Cash
  • Ledger
  • Item Ledger
  • Collection Report
  • Sales & Purchase Report
  • Purchase Analysis
  • Sales Frequency
  • Purchase Log
  • Export Report
  • Backup Data
  • To-Do List
  • Calculator
  • Address Books
Project Name:Online Billing System
Language/s Used:PHP with CodeIgniter Web Framework
PHP version (Recommended):7.4
Type:Web Application
Developer:Imperial Technologies, Surendra Lekhyani
Billing System PHP MySQL Project Overview

Instructions: How to Run?

  • After you finish downloading the project, unzip the project file and head over to your XAMPP directory.
  • There you’ll find a folder naming “htdocs”.
  • Inside the “htdocs” folder, paste the project folder (not the .zip one, but the extracted one).
  • Open your favorite browser; we recommend using Google Chrome or Mozilla Firefox.
  • Then, go to URL “http://localhost/phpmyadmin“.
  • Create a Database with a name that is provided inside the “01 LOGIN DETAILS & PROJECT INFO.txt”.
  • Click on the “Import” tab and choose the database file (.sql) which is provided under the folder naming “DATABASE FILE”.
  • After setting up all these, go to URL “http://localhost/[ PROJECT_FOLDER_NAME ]/“
  • All the login details are provided inside the project folder, check that out and enter in order to use it.

And there you have it, a full setup of the Billing System project in PHP MySQL. For this particular PHP project, PHP Version 7 is required because the project does not operate with the oldest PHP version. So, users with the old PHP version (less than 7) might face various problems while operating it. As a result, you’ll need to manage your PHP version (only if you’re using the old version) at the moment. Also, Download Free Billing Management System Project in PHP MySQL CodeIgniter Source Code. So, this billing system PHP project is a fully functional project for all the intermediate levels that broads vast knowledge into such PHP web applications. In conclusion, this whole PHP project with free source code is an absolute project and a meaningful way for the users to learn and explore more about it.

Free Download Billing System Project in PHP MySQL CodeIgniter with Source Code:
Click the Download Button Below to Start Downloading

Note: Only for Educational Purpose


    1. you hv to mention ur folder name in config.php…

      or simply name ur folder ‘bill’ in htdocs…

      this is my project…

      1. Hi Surendra Lekhyani,

        Thank you for this awesome project. 🙂
        How the admin and user rights are set?
        I checked the controllers and the users and rights tables but was not able to find it.
        If we insert a new user in the table, we need to give rights.


      2. hi again and thank you for the very nice project.

        how to add a supplier table for issuing purchase bills for?
        there is only customer which also shows up in the sales billing module.

        supplier are for purchase and customer are for purchase usually

        thank you

    1. That’s kind of impossible! You’ll be able to run the project if you completely follow the steps (also requires some knowledge of operating with PHP) Just make sure you’ve set up the database and everything. And do not change the name of the project folder without any configuration.

      1. not any present video for explain all setting plz, any video present so you provide me plz in this mail

  1. Unable to connect to your database server using the provided settings.

    Filename: C:/wamp64/www/bill/system/database/DB_driver.php

    Line Number: 436

  2. all errors were gone after i use XAMPP 7.0.0. seems like the latest xampp has higher PHP version which the code wont work.
    username and pass are in the .txt file

    1) extract the folder to ‘xampp/htdoc’ folder
    2) create a Database called ‘billingci’
    3) import the sql file provided

    thats all!

    if you need help how to use xampp or managing the database, just search and watch in youtube 🙂

  3. My xampp is running but ‘php artisan serve could not open input fine’ pls help how can I resolve this issue?

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