In a scenario where database queries are not executing as expected, a useful CodeIgniter tool for debugging is ______.
- Database Profiler
- Form Validation Library
- Migration Tool
- Query Builder
The Database Profiler in CodeIgniter is a valuable tool for debugging database queries. It helps developers analyze and optimize database interactions during development.
The technique of ________ is essential in the Email Class to avoid being flagged as spam.
- CAPTCHA Verification
- DKIM (DomainKeys Identified Mail)
- Email Encryption
- SPF (Sender Policy Framework)
The technique of DKIM (DomainKeys Identified Mail) is essential in the Email Class to add a digital signature to outgoing emails. This signature helps verify the authenticity of the sender, reducing the chances of emails being flagged as spam by recipient servers.
Payment gateways typically use ________ to encrypt sensitive information like credit card numbers.
- HMAC
- JWT
- OAuth
- SSL/TLS
Payment gateways utilize SSL/TLS (Secure Sockets Layer/Transport Layer Security) protocols to encrypt sensitive data such as credit card numbers during transmission. This encryption ensures that the information remains secure and protected from unauthorized access during online transactions.
To customize the email header, the Email Class uses the ________ method.
- custom_header
- header_custom
- set_custom
- set_header
The correct method to customize the email header in the Email Class is set_header. This method allows you to set custom headers for your emails, providing flexibility in the email structure.
A user's request to delete an item from the cart goes through a series of steps in the MVC architecture. Identify the correct order: ________.
- 1 (Model), 2 (Controller), 3 (View)
- 2 (Controller), 1 (Model), 3 (View)
- 2 (Controller), 3 (View), 1 (Model)
- 3 (View), 2 (Controller), 1 (Model)
The correct order is: Model processes the delete request (1), Controller handles the request and updates the data (2), and View reflects the updated cart to the user (3).
How does CodeIgniter's 'show_error()' function differ from 'show_404()'?
- 'show_404()' is used for handling routing errors.
- 'show_error()' is for handling database errors.
- It displays a general error message with a 404 status code.
- It specifically shows a 404 page not found error.
'show_error()' is for general errors, while 'show_404()' is specifically for 404 errors. It helps in customizing error pages based on the error type.
What is the best practice for handling dependencies in a custom library in CodeIgniter?
- Creating a separate configuration file for dependencies
- Hardcoding dependencies directly in the library file
- Using the CodeIgniter Loader class to manage dependencies
- Utilizing Composer for dependency management
In CodeIgniter, it's recommended to use the Loader class to handle dependencies. This ensures cleaner and more maintainable code by avoiding hardcoded dependencies.
A CodeIgniter application needs to integrate a complex third-party library for analytics. The primary challenge faced is __________.
- Compatibility issues with CodeIgniter core
- Inconsistency in data format between the library and CodeIgniter
- Lack of documentation for the third-party library
- Security concerns in integrating third-party code
When integrating a third-party library for analytics in a CodeIgniter application, the primary challenge often revolves around security concerns. It's crucial to ensure that the third-party code doesn't compromise the application's security.
In CodeIgniter, the ________ method is used for generating JSON-encoded database query results.
- json()
- json_encode()
- result_json()
- to_json()
In CodeIgniter, the json() method is used for generating JSON-encoded database query results. It simplifies the process of returning JSON from your controllers.
To enhance the performance of an application sending out frequent transactional emails, the Email Class can be integrated with ________.
- Redis
- Memcached
- SMTP
- CI_Cache Library
The correct option is Memcached. Integrating the Email Class with Memcached can enhance performance by caching email-related data, reducing the load on the server and improving the efficiency of sending frequent transactional emails.