mrayanghosh/grocery-billing-system

How mrayanghosh/grocery-billing-system works

The Grocery Billing System supports an admin workflow: log in, maintain product stock, build a multi-item bill, deduct purchased quantities, and print an invoice. Stock management and billing query the shared MySQL product catalog through the PHP connection; billing calculations also run in the browser, while invoice data passes through PHP session state to the print page. The README documents responsive styling and these major capabilities. Evidence is limited to the README and sampled source; edges reflect only relationships visible there.

Main entry points: billing.php Bill submission · stock.php Stock management · index.php Login · print_bill.php Printable invoice

Components 12

Admin Access

Login index.php
PHP session state
Logout logout.php

Product Inventory

Stock management stock.php
Product catalog
MySQL connection db.php

Billing Workflow

Bill submission billing.php
Dynamic bill rows billing.js

Invoice and UI

Printable invoice print_bill.php
Responsive styling style.css

Other components

Shop admin
Admin browser

Connections 20

Shop admin → Login: enters credentials index.php
Login → PHP session state: sets login state index.php
Login → Stock management: redirects on success index.php
Stock management → PHP session state: checks login state stock.php
Stock management → MySQL connection: includes connection stock.php
Stock management → Product catalog: reads and writes products stock.php
Bill submission → PHP session state: checks login state billing.php
Bill submission → MySQL connection: includes connection billing.php
Bill submission → Product catalog: reads products and updates stock billing.php
Bill submission → Dynamic bill rows: loads calculations billing.php
Dynamic bill rows → Admin browser: updates displayed totals billing.js
Bill submission → PHP session state: stores bill data billing.php
Bill submission → Printable invoice: redirects after billing billing.php
Printable invoice → PHP session state: reads and clears bill data print_bill.php
Shop admin → Stock management: manages inventory README.md
Shop admin → Bill submission: creates customer bill README.md
Shop admin → Printable invoice: prints bill print_bill.php
Logout → PHP session state: destroys session logout.php
Logout → Login: redirects after logout logout.php
Admin browser → Responsive styling: loads page styles

Drawn by GitDiagram on November 15, 2026 from the repository's file tree, README and source files. Read as Markdown ·