Authentication System in CodeIgniter 4 | Complete Login & Registration Tutorial | Codingnator
In this video, you'll learn how to build a complete *Authentication System* in *CodeIgniter 4* from scratch using *PHP* and **MySQL**. This tutorial is beginner-friendly and explains every step in detail, making it easy to understand how user authentication works in real-world web applications.
What You'll Learn
Introduction to Authentication
What is Login & Registration?
How Authentication Works
User Registration Form
Form Validation
Password Hashing (`password_hash()`)
Secure Password Verification (`password_verify()`)
MySQL Database Connection
Creating Users Table
Saving User Data
Login Authentication
Session Management
User Dashboard
Logout Functionality
Route Protection
Prevent Unauthorized Access
Flash Messages
Error Handling
Security Best Practices
MVC Structure in CodeIgniter 4
Technologies Used
CodeIgniter 4
PHP 8+
MySQL
HTML5
CSS3
Bootstrap 5
XAMPP
VS Code
Project Features
User Registration
Secure Login System
Password Encryption
Session-Based Authentication
Logout Functionality
Protected Dashboard
Form Validation
Flash Messages
MVC Architecture
Database Integration
Concepts Covered
MVC Architecture
Controllers
Models
Views
Routes
Sessions
Validation
Database Query Builder
Password Security
Authentication Flow
User Authorization
CRUD Basics
This tutorial is perfect for beginners who want to learn how professional login systems are built using CodeIgniter 4.
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