Course Content
Introduction to CodeIgniter 4
CodeIgniter is an Application Development Framework. CodeIgniter is a popular and powerful MVC (Model-View-Controller) framework that is used to develop web applications. It is a free and Open-source PHP framework.
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CodeIgniter 4 – Introduction
CodeIgniter 4 – Server Requirement
CodeIgniter 4 – Installation
CodeIgniter 4 – Application Structure
CodeIgniter 4 – Environment Variables
MVC (Model-View-Controller)
MVC stands for Model-View-Controller. MVC is an application design model consisting of three interconnected parts. They include the model (data), the view (user interface), and the controller (processes that handle input).
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What is MVC (Model-View-Controller)?
CodeIgniter 4 – Controllers
CodeIgniter 4 – Views
CodeIgniter 4 – Models
CodeIgniter 4 – Remove index.php from the URL
CodeIgniter 4 – Include header and footer
Sessions
The Session class allows you to maintain a user’s "state" and track their activity while they browse your site.
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CodeIgniter 4 – Session
URI Routing
There is a one-to-one relationship between a URL string and its corresponding controller class/method.
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CodeIgniter 4 – URI Routing
CodeIgniter 4 – Highlight menu item using URI Segment
Working with Database
Like any other framework, we need to interact with the database very often and CodeIgniter makes this job easy for us. It provides a rich set of functionalities to interact with the database.
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CodeIgniter 4 – Connect to Database
CodeIgniter 4 – Insert data
CodeIgniter 4 – Retrieve data
CodeIgniter 4 – Update data
CodeIgniter 4 – Delete data
Example
Sign in, Send an email and Upload a file
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CodeIgniter 4 – Login with email and password
CodeIgniter 4 – Send an email
CodeIgniter 4 – Upload a file
CodeIgniter 4 – Generate a PDF
Spreadsheet
PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Importing Excel and CSV into MySQL help to save the user time and avoid repetitive work.
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CodeIgniter 4 – Import data from Spreadsheet
Payment Gateway
PayTM, Razorpay payment gateway
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CodeIgniter 4 – Razorpay integration
CodeIgniter 4 – PayTM integration
CodeIgniter 4
About Lesson

What is MVC?

MVC stands for Model-View-Controller. MVC is an application design model consisting of three interconnected parts. They include the model (data), the view (user interface), and the controller (processes that handle input).

MVC is a well-known model for designing web applications. Popular programming languages like JavaScript, Python, Ruby, PHP, Java, C#, and Swift have MVC frameworks that are used for web or mobile application development.

MVC

How does MVC work?

  • The Model (/app/Models) is responsible for managing the data of the application. It receives user input from the Controller.
  • The View (/app/Views) is responsible for the presentation of the Model (data) in a certain format.
  • The Controller (/app/Controllers) receives the user input and validates it, and then passes the input to the Model. It performs interaction on the model objects.

Benefits of MVC Framework

  • Parallel development
  • Code reusability
  • Multiple views for a model
  • Organizes large-size web applications
  • Faster Development Process
  • SEO-Friendly Platform
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