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.
To handle JSON data in CodeIgniter, which PHP function is used to decode JSON strings?
- decode_json()
- json_decode()
- json_encode()
- parse_json()
In CodeIgniter, the PHP function used to decode JSON strings is json_decode(). This function converts a JSON-encoded string into a PHP variable, making it easy to work with JSON data in CodeIgniter applications.
To optimize performance, CodeIgniter's ________ should be configured to handle specific project requirements.
- Caching
- Helpers
- Middleware
- Routing
CodeIgniter's caching system allows you to store the processed output of a page, reducing the server load by serving pre-generated content when possible. This is especially useful for frequently requested pages.
To delete a record, the Model method in CodeIgniter used is ________.
- delete()
- discard()
- erase()
- remove()
The correct method for deleting a record in CodeIgniter is delete(). This method is used to remove records from the database table based on specified conditions.