The process of ________ is used by payment gateways to verify the funds and account details.
- Authentication
- Authorization
- Encryption
- Validation
In a payment gateway integration, the term "validation" refers to the process of confirming the legitimacy and accuracy of the provided information, ensuring the funds are available, and verifying the account details before completing a transaction. This step is crucial for security and financial integrity.
When a new version of the API is deployed in CodeIgniter, maintaining backward compatibility is crucial for ________.
- API documentation
- Existing client applications
- SEO rankings
- User experience
Backward compatibility is essential for existing client applications that rely on the API. If backward compatibility is not maintained, existing clients may break, leading to a poor user experience. It also ensures a smooth transition for clients using older versions of the API, allowing them time to update and migrate to the new version without disruption.
How can you pass multiple data items to a view in CodeIgniter?
- $this->load->data()
- $this->load->vars()
- $this->view->set()
- $this->view->set_data()
In CodeIgniter, the recommended method for passing multiple data items to a view is by using $this->load->vars(). This method accepts an associative array, making it easy to pass and organize multiple data items for the view.
Which protocol is commonly used for secure payment transactions over the internet?
- FTP
- HTTP
- HTTPS
- SMTP
HTTPS (Hypertext Transfer Protocol Secure) is the protocol commonly used for secure payment transactions over the internet. It ensures that data exchanged between the user's browser and the server is encrypted, providing a secure communication channel for sensitive information like credit card details.
How are different environments like development, testing, and production handled in the CodeIgniter directory structure?
- By configuring the 'config.php' file
- Through the 'index.php' file
- Using the 'environment.php' file
- Utilizing the 'environment' directory
In CodeIgniter, different environments are handled through the 'index.php' file. The file contains conditional checks based on the environment, allowing developers to set different configurations for development, testing, and production environments. This helps in managing various settings such as error reporting, logging, and caching based on the deployment stage.
In advanced web applications, how is token-based CSRF protection typically implemented?
- Embedding CSRF tokens in the HTML forms.
- Including CSRF tokens in the URL parameters.
- Storing CSRF tokens in session cookies.
- Using IP-based verification for each request.
In advanced web applications, token-based CSRF protection is typically implemented by embedding CSRF tokens in the HTML forms. These tokens act as a unique, unpredictable value associated with the user's session. When the form is submitted, the server checks if the token matches the expected value, thus verifying the legitimacy of the request and preventing CSRF attacks.
Which MVC component acts as a bridge between the Model and the View?
- Controller
- Middleware
- Router
- ViewModel
The Controller serves as a bridge between the Model and the View in CodeIgniter's MVC pattern. It handles user input, processes it using the Model, and sends the results to the View for presentation.
In CodeIgniter, debugging information about database queries can be displayed using ______.
- debug_queries()
- display_queries()
- log_queries()
- show_queries()
CodeIgniter allows you to debug database queries using the debug_queries() method. This function outputs information about the executed database queries, including the SQL statements, execution time, and other relevant details.
To limit the results returned by a query, the Active Record Class method ________ is used.
- filter()
- limit()
- narrow()
- restrict()
The limit() method in the Active Record Class is used to restrict the number of records returned by a query. It takes two parameters - the number of records to return and the offset.
How does AJAX contribute to form validation in modern web applications?
- Allows asynchronous communication with the server to validate form data.
- Enhances user experience by providing real-time validation feedback.
- Ensures server-side validation only.
- Improves security by encrypting form data during validation.
AJAX (Asynchronous JavaScript and XML) facilitates real-time communication with the server, allowing form validation without a page refresh. It enhances user experience and responsiveness by providing immediate feedback to users, reducing the need for server-side validation only. AJAX doesn't necessarily improve security; its focus is on enhancing user interaction and reducing latency.
How does CodeIgniter's Model handle relationships between different database tables?
- Connecting tables using the 'query' method
- Defining relationships through the 'relationship' method
- Using the 'has_one' and 'has_many' methods to define relationships
- Utilizing the 'join' method to establish table connections
CodeIgniter's Model provides the 'has_one' and 'has_many' methods, allowing developers to establish relationships between different database tables. These methods make it easy to define associations such as one-to-one and one-to-many, providing a structured approach to working with database relationships.
For advanced debugging, CodeIgniter's log messages can be integrated with external tools like ________.
- CodeLogger
- DebugBridge
- Firebug
- Xdebug
CodeIgniter allows integration with external debugging tools, and Xdebug is a popular choice for advanced debugging in PHP applications. It provides features like stack traces, profiling, and code coverage. Integrating Xdebug with CodeIgniter's logging enhances the debugging capabilities of the framework.