Update README.md

CodeIgniter added under php

README.md

@@ -247,6 +247,7 @@ If you would like to be guided through how to contribute to a repository on GitH
 ## PHP
 
 - [Appwrite](https://github.com/appwrite/appwrite) _(label: good first issue)_ <br> An End-to-end backend server for frontend and mobile developers. 🚀
+- [CodeIgniter](https://github.com/codeigniter4/CodeIgniter4) _(label: good first issue)_ <br> A lightweight, fast PHP framework, it is easy to install and perfect for learning MVC architecture.
 - [Deployer](https://github.com/deployphp/deployer) _(label: good-for-beginner)_ <br> A deployment tool written in PHP with support for popular frameworks out of the box.
 - [Drupal](https://www.drupal.org/getting-involved-guide) _(label: n/a)_ <br> Leading open-source CMS for ambitious digital experiences that reach your audience across multiple channels.
 - [Flarum](https://github.com/flarum/core) _(label: Good-first-issue)_ <br> Simple forum software for building great communities.

data.json

@@ -1211,6 +1211,15 @@
             ],
             "description": "Symfony is a PHP framework for web applications and a set of reusable PHP components."
         },
+        {
+            "name": "CodeIgniter",
+            "link": "https://github.com/codeigniter4/CodeIgniter4",
+            "label": "good first issue",
+            "technologies": [
+                "PHP"
+            ],
+            "description": "A lightweight, fast PHP framework, it is easy to install and perfect for learning MVC architecture."
+        },
         {
             "name": "Laravel Newsletters",
             "link": "https://github.com/spatie/laravel-newsletter",