Complete CRUD Application in CodeIgniter 4 | Create, Read, Update & Delete | Full Project Tutorial |

Published: 07 August 2026
on channel: Developers4U

In this video, you'll learn how to build a *Complete CRUD (Create, Read, Update, Delete) Application* in *CodeIgniter 4* from scratch using *PHP* and **MySQL**. This beginner-friendly tutorial explains every step in detail, from setting up the database to performing all CRUD operations with validation, sessions, flash messages, and Bootstrap UI.

CRUD is one of the most important concepts in web development and forms the foundation of almost every dynamic web application, such as Student Management Systems, Employee Management Systems, Inventory Systems, Blog Applications, and E-commerce dashboards.

By the end of this tutorial, you'll be able to build complete database-driven applications using the MVC architecture in CodeIgniter 4.

What You'll Learn

Introduction to CRUD Operations
What is CRUD?
MVC Architecture Overview
Project Setup
Database Configuration
Environment Configuration (.env)
Connecting CodeIgniter 4 with MySQL
Creating Database
Creating Tables
Creating Models
Creating Controllers
Creating Views
Routing Configuration
Query Builder Basics
Inserting Data (Create)
Displaying Data (Read)
Editing Records (Update)
Deleting Records (Delete)
Form Validation
Flash Messages
Session Handling
Search Functionality
Pagination
Sorting Records
Data Filtering
Error Handling
Bootstrap Integration
Security Best Practices
Testing the CRUD Application

Technologies Used

CodeIgniter 4
PHP 8+
MySQL
HTML5
CSS3
Bootstrap 5
JavaScript
XAMPP
VS Code

Concepts Covered

CRUD Operations
MVC Architecture
Controllers
Models
Views
Routes
Query Builder
Database Connection
Form Validation
Sessions
Flashdata
Pagination
Search
Sorting
Database Security
Request Handling
Response Handling
Reusable Code

Project Features

Create New Records
View All Records
Update Existing Records
Delete Records
Responsive Bootstrap Interface
Form Validation
Success & Error Messages
Session Management
Search Functionality
Pagination Support
Clean MVC Structure
Secure Database Operations
User-Friendly Interface
Professional Project Structure

Practical Examples

Student Management System
Employee Management System
Product Management
Customer Records
User Management
Contact Management
Inventory Management
Blog Post Management

Why Learn CRUD?

Build real-world web applications
Understand database operations
Learn MVC architecture
Develop dynamic PHP applications
Improve backend development skills
Prepare for interviews and projects
Build portfolio-ready applications
Follow CodeIgniter 4 best practices

This tutorial is perfect for beginners and intermediate developers who want to master CRUD operations in CodeIgniter 4 and build professional, database-driven web applications from scratch.

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