A developer needs to ensure session data is available only during the current browser session. This can be achieved by setting ________ in CodeIgniter's session configuration.
- session_destroy_on_exit
- session_expire_on_close
- session_regenerate_on_close
- session_renew_on_reload
To ensure session data is available only during the current browser session in CodeIgniter, set the session_expire_on_close configuration. This causes the session to expire when the browser is closed.
How does CodeIgniter handle nested transactions?
- CodeIgniter doesn't support nested transactions.
- CodeIgniter handles nested transactions by using the 'trans_begin()' and 'trans_complete()' functions.
- CodeIgniter supports nested transactions through the use of savepoints.
- CodeIgniter uses database triggers for nested transactions.
CodeIgniter supports nested transactions using savepoints. Savepoints allow you to create intermediate points within a transaction, providing a way to roll back to specific points if needed. This is useful for complex transactions where you want more granular control over the rollback process.
In a try-catch block, what is the role of the 'finally' clause?
- Declares a variable to store exception details
- Defines a custom exception message
- Executes code regardless of whether an exception is thrown or not
- Specifies the code to be executed if an exception is thrown
The 'finally' clause is used to specify a block of code that will be executed regardless of whether an exception is thrown or not. This is useful for tasks such as releasing resources or closing connections, ensuring cleanup operations are performed.
The ________ feature in CodeIgniter's database utilities is used to improve query execution time.
- Lazy Loading
- Query Caching
- Query Optimization
- Result Compression
CodeIgniter's Query Caching feature is used to improve query execution time. By caching query results, subsequent requests for the same data can be served more quickly.
In the Active Record Class, which method is typically used to insert a new record into the database?
- add()
- create()
- insert()
- save()
The insert() method in the Active Record Class of CodeIgniter is used to insert a new record into the database. It allows you to specify the table and the data to be inserted. This method simplifies the process of adding data to the database using an object-oriented approach.
What is the primary purpose of pagination in a CodeIgniter application?
- Improving user experience with faster page loads
- Organizing data for better readability
- Simplifying code structure for better maintenance
- Splitting large datasets into smaller chunks
Pagination in CodeIgniter is primarily used to split large datasets into smaller, more manageable chunks. This enhances the user experience by enabling faster page loads and makes it easier to navigate through large sets of data.
In CodeIgniter, how can you redirect the user to a different method within the same controller?
- $this->load->redirect('method_name')
- $this->load->set('location', 'method_name')
- $this->load->view('method_name')
- $this->redirect('method_name')
To redirect a user to a different method within the same controller in CodeIgniter, you can use $this->redirect('method_name'). This method simplifies the process of redirecting and improves code readability.
In the database configuration, the ________ setting determines whether to use persistent database connections.
- connection_persistence
- pconnect
- persistent
- use_persistent
In CodeIgniter's database configuration, the pconnect setting determines whether to use persistent database connections. Setting it to TRUE enables persistent connections, while setting it to FALSE disables them. Persistent connections help reduce the overhead of establishing a new connection for each request, improving performance.
In CodeIgniter, the use of ________ headers can help prevent Clickjacking attacks.
- X-Frame-Options
- X-Content-Type-Options
- Strict-Transport-Security
- Content-Security-Policy
CodeIgniter recommends setting the X-Frame-Options header to prevent Clickjacking attacks. This header controls whether a browser should be allowed to render a page in a frame or iframe, adding a security layer against UI redressing attacks.
The use of ________ in payment gateways helps in managing recurring payments efficiently.
- Authentication
- Encryption
- Secure Protocols
- Tokenization
Tokenization is a crucial feature in payment gateways for managing recurring payments efficiently. It involves replacing sensitive payment information with a unique token, enhancing security and simplifying the process of handling recurring transactions without exposing confidential data.
When a user encounters a non-existent page, redirecting them to a custom error page is handled by ________ in CodeIgniter.
- 404_override Route
- Controller __construct() method
- Error Handling Class
- Routes Configuration
The 404_override route in CodeIgniter allows developers to specify a custom controller/method to handle 404 (page not found) errors. It provides a way to redirect users to a custom error page when a non-existent page is encountered.
Which CodeIgniter method checks whether the current database platform supports transactions?
- $this->db->check_transactions();
- $this->db->supports_transactions();
- $this->db->trans_status();
- $this->db->trans_supported();
The method $this->db->supports_transactions(); checks whether the current database platform supports transactions in CodeIgniter. It returns a boolean value indicating transaction support.