Module 1: Introduction to CodeIgniter

Fundamentals

• What is CodeIgniter? (Framework Overview)

• MVC Architecture Explained

• CodeIgniter 3 vs CodeIgniter 4 Differences

• System Requirements & Installation

  • Manual Installation

  • Composer Installation

  • Docker Setup

Project Structure

• Directory Layout (app/, system/, public/)

• Environment Configuration (.env)

• Important Files (Routes, Config, Filters)

• Auto-loading Resources

Module 2: Routing & Controllers

Routing System

• Basic Routing

• HTTP Verb Routing (get, post, put, delete)

• Route Parameters

• Named Routes

• Route Groups

• Custom Route Filters

Controllers

• Creating Controllers

• Controller Methods

• Returning Responses (View, JSON, Redirect)

• RESTful Resource Controllers

• Remapping Methods

Module 3: Views & Templating

• Creating Views

• Passing Data to Views

• View Fragments (Layouts)

• Escaping Output (Security)

• Custom View Cells

• Integrating Frontend Frameworks

Module 4: Database & Models

Database Configuration

• Connection Setup

• Query Builder Basics

• Raw Queries vs Query Builder

• Multiple Database Connections

Models

• Creating Models

• CRUD Operations

• Model Events

• Entity Classes

• Validation Rules

• Soft Deletes

Module 5: Form Handling & Validation

Form Processing

• Form Helper

• CSRF Protection

• File Uploads

• Form Validation

  • Rule Sets

  • Custom Rules

  • Error Display

Advanced Validation

• Validation in Models

• AJAX Form Validation

• Custom Validation Libraries

Module 6: Sessions & Authentication

Session Management

• Native Session Handling

• Flash Messages

• Session Configuration

Authentication System

• User Registration

• Login/Logout

• Password Hashing

• Remember Me Functionality

• Role-Based Access Control

Module 7: Working with APIs

Creating RESTful APIs

• API Routes

• Response Formats (JSON, XML)

• API Versioning

• Rate Limiting

• API Documentation

Consuming APIs

• HTTP Client Library

• cURL Requests

• API Authentication (JWT, OAuth)

Module 8: Security Practices

• Input Filtering

• XSS Protection

• CSRF Protection

• Content Security Policy

• Database Security

• Security Headers

Module 9: Performance Optimization

• Caching Strategies

• Database Optimization

• Asset Minification

• Lazy Loading

• Profiling & Debugging

Module 10: Testing & Debugging

• Unit Testing (PHPUnit)

• Feature Testing

• Debug Toolbar

• Error Handling

• Logging

Module 11: Deployment

• Server Requirements

• Deployment Checklist

• .htaccess Configuration

• Environment Setup

• Zero Downtime Deployment

Module 12: Real-World Projects

Project 1: Blog System

• Article Management

• Categories & Tags

• Comments System

• Admin Panel

Project 2: E-Commerce Platform

• Product Catalog

• Shopping Cart

• Checkout Process

• Payment Integration

Project 3: Task Management App

• User Dashboard

• Project Management

• Task Assignment

• Progress Tracking