When chaining methods in Active Record Class, the order of ________ and ________ methods is crucial for correct query formation.
- from, limit
- limit, order_by
- select, where
- where, order_by
The order of limit and order_by methods is crucial when chaining methods in Active Record Class. Incorrect order can lead to unexpected query results.
How does 3D Secure technology in payment gateways contribute to fraud prevention?
- Address Verification System (AVS)
- Authentication of Cardholder
- Encryption of Transaction Data
- Tokenization of Card Information
3D Secure technology contributes to fraud prevention by authenticating the cardholder during the transaction. This adds an extra layer of security, making it more difficult for unauthorized users to make fraudulent transactions, thus enhancing the overall security of online payments.
In CodeIgniter, how can you specify dependencies between different migrations?
- By creating a separate configuration file
- By defining dependencies in the migration command
- It's not possible to specify dependencies
- Using the $depends property in migration files
CodeIgniter allows you to specify dependencies between migrations using the $depends property in migration files. This helps in ensuring that migrations are executed in a specific order, addressing any dependencies between them.
What is the primary difference between session data and flashdata in CodeIgniter?
- Flashdata is only available during the next server request and is then automatically cleared.
- Flashdata is stored in cookies, while session data is not.
- Session data is only used for flash messages and not other data.
- Session data persists throughout the user's entire session.
The primary difference between session data and flashdata in CodeIgniter lies in their lifespan. Session data persists throughout the user's entire session, while flashdata is only available during the next server request and is automatically cleared afterward. Flashdata is useful for temporary messages or data that needs to be displayed once, such as flash messages, while session data is suitable for information that should persist across multiple requests during a user's session. Understanding this difference is crucial for effective use of session-related features in CodeIgniter.
When setting up a new environment for testing, the developer should configure specific settings in the ________ directory.
- application/config
- application/config/testing
- system/config
- system/environment/testing
The application/config directory is used to store configuration files for different environments. For testing configurations, developers should create a testing folder within application/config.
How does CodeIgniter's architecture facilitate the transformation of database results into XML or JSON formats?
- Active Record Pattern
- MVC Pattern
- Observer Pattern
- Singleton Pattern
CodeIgniter follows the MVC pattern, which separates the application into models, views, and controllers. This separation makes it easy to transform database results into XML or JSON formats using views.
A secure way to handle file uploads in a distributed environment is to use ________ storage.
- cloud
- database
- distributed
- local
Using cloud storage is a secure way to handle file uploads in a distributed environment. Cloud storage providers offer scalable and reliable solutions, reducing the load on your application servers.
__________ is a key consideration when updating a third-party library to ensure minimal disruption in a CodeIgniter application.
- Compatibility
- Dependency
- Extension
- Integration
Compatibility is a key consideration when updating a third-party library in a CodeIgniter application. This ensures that the updated library works seamlessly with the existing CodeIgniter codebase, minimizing disruptions and maintaining application stability.
What is the difference between the get() and get_where() methods in the Active Record Class?
- Both methods are identical in functionality
- The get() method retrieves all records from the table
- The get_where() method is used for complex conditional queries
- get() is used for SELECT * queries, get_where() for specific conditions
The get() method retrieves all records from the table, while the get_where() method is specifically designed for queries with complex conditions. The get_where() method allows you to specify conditions directly in the method call.
_______________ is a CodeIgniter feature that aids in the efficient streaming of large JSON datasets.
- JSONIterator
- JSONSerialization
- JSONStreamer
- JsonResponse
CodeIgniter's JSONStreamer feature aids in the efficient streaming of large JSON datasets. It's designed for handling large amounts of JSON data in a memory-efficient manner during streaming.