In CodeIgniter, how can you extend the functionalities of a third-party library without modifying its core files?
- Copy and paste the relevant code from the library and modify it directly
- Extend the library by creating a new class that inherits from the library's class
- Use hooks and events provided by CodeIgniter
- Write a separate helper function that overrides the library's functions
CodeIgniter provides a powerful feature called hooks, which allows you to extend the functionalities of a third-party library without modifying its core files. By using hooks, you can execute custom code at specific points in the CodeIgniter execution process, seamlessly integrating additional functionality without directly altering the library's code. This approach ensures maintainability and facilitates updates to the library without losing custom modifications.
In high-risk transactions, payment gateways might implement ________ as an additional verification step.
- Biometric Verification
- Risk Scoring
- Secure Socket Layer (SSL)
- Two-Factor Authentication
In high-risk transactions, payment gateways often implement risk scoring as an additional verification step. Risk scoring involves assessing various parameters such as transaction history, user behavior, and geolocation to determine the likelihood of a transaction being fraudulent. This adds an extra layer of security in sensitive transactions.
Describe how CodeIgniter handles data sanitization when passing data to views.
- CodeIgniter automatically applies HTML escaping to all data passed to views.
- CodeIgniter relies on the browser to sanitize data for views.
- CodeIgniter uses JavaScript to sanitize data before rendering it in views.
- Data sanitization is not handled by CodeIgniter; developers must manually sanitize data.
CodeIgniter automatically applies HTML escaping to all data passed to views, preventing cross-site scripting (XSS) attacks by default. This ensures that user input is safely rendered in the views without introducing security vulnerabilities.
In a scenario where a user's access token is compromised, the OAuth implementation should allow ________ to mitigate the risk.
- Token Refresh
- Password Change
- Two-Factor Authentication
- Token Revocation
The correct option is "Token Revocation." If a user's access token is compromised, the OAuth implementation should support revoking or invalidating the token to prevent unauthorized access. This is a crucial security measure to mitigate the risk of unauthorized access.
To retrieve a specific session value in CodeIgniter, the syntax used is $this->session->userdata('______').
- attribute
- item
- key
- value
The correct syntax is $this->session->userdata('item'), where 'item' is the key or name of the session value you want to retrieve.
After updating CodeIgniter to a new version, a previously integrated third-party payment gateway library stops functioning. The first step to troubleshoot is to check __________.
- CodeIgniter's error logs for compatibility issues
- The payment gateway provider's server status
- The server's internet connection
- The third-party library's documentation for updates
When a third-party library stops functioning after a CodeIgniter update, the first step is to consult the library's documentation for any updates or changes. This helps identify and address any compatibility issues introduced by the CodeIgniter update.
The method ________ in a controller is used to load models in CodeIgniter.
- $this->load->model()
- load->model()
- load_model
- load_model()
In CodeIgniter, to load models in a controller, you use the syntax $this->load->model('ModelName'). The load is an object, and model() is a method of that object. So, the correct syntax is $this->load->model('ModelName').
In CodeIgniter, which log level is recommended for a production environment?
- DEBUG
- ERROR
- INFO
- WARNING
In a production environment, it's recommended to set the log level to ERROR to focus on critical issues that need attention. Debug and info messages might reveal too much information.
In CodeIgniter, what is the primary purpose of a Helper?
- Encapsulates controller logic
- Enhances and extends the functionality of views
- Handles routing and URL manipulation
- Manages database operations
CodeIgniter Helpers are utility functions that provide common functionality, such as form handling, URL manipulation, and more, to enhance and extend the functionality of views. They are not directly involved in database operations or routing.
What is the role of SMTP settings in the configuration of the Email Class for sending emails?
- Configuring the Email Body
- Defining the Email Subject
- Setting up the Mail Server
- Specifying the Sender's Email
SMTP (Simple Mail Transfer Protocol) settings play a crucial role in the configuration of the Email Class for sending emails. They involve specifying the mail server responsible for sending the email. Configuring SMTP settings ensures that emails are routed through the designated server, enabling reliable and efficient email delivery.