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CodeIgniter 4 REST API CRUD Example with Postman: Complete Tutorial

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CodeIgniter 4 REST API CRUD Example with Postman: Complete Tutorial

In modern web development, RESTful APIs serve as the backbone of scalable applications, enabling seamless communication between servers and diverse clients such as mobile apps, single-page applications (SPAs), and third-party services. CodeIgniter 4, a lightweight yet powerful PHP framework, offers built-in tools like ResourceController and the ResponseTrait to create clean, efficient REST APIs with minimal boilerplate code. In this comprehensive, step-by-step tutorial, you will build a fully functional CRUD (Create, Read, Update, Delete) REST API from scratch using CodeIgniter 4. We will cover project installation, MySQL database setup, model creation with validation rules, building a RESTful controller with proper error handling, route configuration, and thorough testing of every endpoint using Postman.

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