PHP Tutorial
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10 min read
CodeIgniter 4 Controllers & Routing
Master CodeIgniter 4 Controllers & Routing with interactive code examples, syntax breakdown, and practice.
# CodeIgniter 4 Controllers & Routing
Welcome to the tutorial on **CodeIgniter 4 Controllers & Routing** in **PHP Tutorial**.
## Overview & Key Concepts
In this module, you will explore essential concepts and industry best practices:
- Clear structural understanding
- Real-world syntax and practical examples
- Reusable code patterns and efficiency tips
> **Pro Tip:** Experiment with the interactive code editor below to verify output in real time!
### Code Demonstration
Review the working code in the editor, make modifications, and test the output immediately.
Welcome to the tutorial on **CodeIgniter 4 Controllers & Routing** in **PHP Tutorial**.
## Overview & Key Concepts
In this module, you will explore essential concepts and industry best practices:
- Clear structural understanding
- Real-world syntax and practical examples
- Reusable code patterns and efficiency tips
> **Pro Tip:** Experiment with the interactive code editor below to verify output in real time!
### Code Demonstration
Review the working code in the editor, make modifications, and test the output immediately.
Example: CodeIgniter 4 Controllers & Routing
php
Try editing the snippet below and click Run Code to see the output live.
<!DOCTYPE html>
<html>
<head>
<style>
body { font-family: monospace; padding: 20px; background: #1e293b; color: #38bdf8; }
.header { color: #facc15; font-size: 18px; margin-bottom: 12px; }
.output-card { background: #0f172a; padding: 16px; border-radius: 8px; border: 1px solid #334155; }
</style>
</head>
<body>
<div class="header">> PHP 8.2 Runtime Simulation</div>
<div class="output-card">
<p>Response Status: 200 OK</p>
<p>Controller: Api\V1\CourseController::index</p>
<p>Memory Usage: 2.14 MB | Execution Time: 8.4 ms</p>
<p>Database: Connected to MySQL (lms_db)</p>
</div>
</body>
</html>