Introduction As a developer, I always wanted to build something that actually matters. Blood banks are critical yet most of them still run on manual processes. So I built LifeFlow, a full-stack Blood Bank Management System that connects donors, hospitals, and admins in one platform. Here's how I built it, what I learned, and the mistakes I made along the way. What Does LifeFlow Do? Donors can register, track their donation history, and download certificates Hospitals can request blood and track availability in real time Admins manage everything : inventory, camps, requests, and analytics Three different roles. One unified system. Tech Stack: Backend: PHP 8.2, PDO Frontend: HTML, CSS, JavaScript Database: MySQL Analytics: Chart.js Server: Apache / XAMPP Key Features I'm Proud Of Role-Based Access Control Each user type (Admin, Hospital, Donor) sees a completely different portal after login. Built using PHP Sessions with full access control on every page.…