CodeIgniter 3

Categories: Web Development
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About Course

CodeIgniter 3 is a popular PHP framework due to its simplicity, speed, and small footprint. Developers who need an elegant toolkit to create full-featured web applications will find CodeIgniter 3 incredibly useful. Both beginners and experienced developers can benefit from its comprehensive set of features.

Why Choose CodeIgniter 3?

  1. Lightweight and Fast: CodeIgniter 3 performs exceptionally well because of its small footprint. It runs faster and uses fewer resources compared to other frameworks.
  2. Easy to Learn: The framework offers a user-friendly and straightforward design. Beginners can quickly grasp its concepts, while advanced developers can leverage its powerful features.
  3. Extensive Documentation: CodeIgniter 3 provides thorough and clear documentation, making it easy to understand and implement its features.
  4. MVC Architecture: The framework follows the Model-View-Controller (MVC) architecture, promoting a structured and maintainable codebase.
  5. Security: Built-in security features help protect web applications from threats like SQL injection, XSS attacks, and CSRF.

Key Features of CodeIgniter 3

  • Form and Data Validation: Simplifies the process of validating form data and ensures data integrity.
  • Session Management: Offers a robust session management system, crucial for maintaining user state in web applications.
  • Database Abstraction: Supports multiple databases and provides an active record pattern for database interaction.
  • Error Handling: Provides user-friendly error-handling mechanisms to assist in debugging and improving the application.
  • Caching: Enhances performance with built-in caching mechanisms.
  • Flexible URI Routing: Enables clean and search engine-friendly URLs.

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Course Content

Introduction to CodeIgniter
CodeIgniter is a powerful PHP framework built for developers who need a simple and elegant toolkit to create full-featured web applications.

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).

Sessions
The Session class allows you to maintain a user’s "state" and track their activity while they browse your site.

URI Routing
There is a one-to-one relationship between a URL string and its corresponding controller class/method. The segments in a URI normally follow this pattern:

Forms and Input
Forms provide a way for users to interact with the application and submit data.

Composer
Composer is dependency manager in PHP. it allows you to declare the libraries your project depends on and it will manage (install/update) them for you.

Security
You can enable CSRF protection by modifying your application/config/config.php file

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.

Example
Sign in, Send an email and Upload a file

AJAX Example
Insert and Update Operations

DataTable
DataTables is a table enhancing plug-in for the jQuery Javascript library that helps in adding sorting, paging, and filtering abilities to plain HTML tables with minimal effort. The main goal is to enhance the accessibility of data in normal HTML tables.

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.

Payment Gateway
Razorpay and PayTM Payment Gateway

Chatbot
WhatsApp Chatbot and Telegram Chatbot

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