Interview Questions for Codeigniter

Here are some interview questions specifically focused on CodeIgniter, a popular PHP framework:

• What is CodeIgniter, and what are its key features and advantages over other PHP frameworks?
• Explain the MVC (Model-View-Controller) pattern and how it is implemented in CodeIgniter.
• How do you set up a database connection in CodeIgniter? Explain the configuration process and how you perform database operations.
• What are CodeIgniter helpers? Give examples of built-in helpers and explain how you create and use custom helpers.
• Describe the routing system in CodeIgniter. How do you define routes and handle different URLs and parameters?
• Explain the concept of controllers in CodeIgniter. How do you create controllers, define actions, and handle user requests?
• What is the role of models in CodeIgniter? How do you create models and perform database operations using models?
• Describe the view layer in CodeIgniter. How do you create views, pass data from controllers to views, and handle view logic?
• What are CodeIgniter libraries? Provide examples of built-in libraries and explain how you create and use custom libraries.
• How does CodeIgniter handle form validation? Describe the validation process and how you display error messages to users.
• Discuss CodeIgniter's security features and best practices. What measures do you take to protect against common security vulnerabilities?
• Explain CodeIgniter's caching system. How do you enable and use caching to improve performance?
• What are CodeIgniter hooks? How do you use hooks to modify the behavior of the framework's core functionality?
• Discuss your experience with CodeIgniter's session management. How do you handle sessions and store session data in CodeIgniter?
• How do you handle file uploads in CodeIgniter? Explain the process of validating and processing uploaded files.

These questions should help evaluate a candidate's understanding and experience with CodeIgniter. Feel free to modify and add questions based on the specific requirements and level of expertise you are looking for.

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