In a scenario where a CodeIgniter application is failing randomly, a unit test should focus on ________ to identify potential issues.
- CodeIgniter core files
- External APIs
- Frequently accessed database queries
- Random input data
When an application fails randomly, the unit test should focus on external APIs to identify potential issues related to data retrieval or communication problems.
To create a custom library in CodeIgniter, the class file must be placed in the ________ directory.
- application/config
- application/core
- application/helpers
- application/libraries
In CodeIgniter, custom libraries should be placed in the 'application/libraries' directory. This is the default location where CodeIgniter looks for user-created libraries. Placing it elsewhere may lead to issues in loading the library.
The process where the Model sends data to the View is known as ________.
- Data Binding
- Data Flow
- Data Rendering
- Data Transmission
The process where the Model sends data to the View is known as Data Rendering. In this step, the Model provides data to the View, and the View is responsible for presenting it to the user in a suitable manner.
For load balancing, CodeIgniter allows the specification of multiple database servers in the ________ array.
- config
- connection
- database
- server
CodeIgniter allows the specification of multiple database servers in the database array. This feature is useful for load balancing and managing multiple database connections efficiently.
In a typical payment gateway integration, which component is responsible for handling customer payment details securely?
- Application interface
- Database server
- Payment gateway API
- Web server
The payment gateway API is responsible for securely handling customer payment details. It encrypts and transmits sensitive information, such as credit card numbers, to the payment gateway for processing while ensuring data integrity and confidentiality.
How do CodeIgniter's database utilities assist in handling database versioning?
- Automatic schema detection and adjustment
- Code generation for database schema
- Enforcing foreign key constraints through the ORM
- Version control through migration files
CodeIgniter's database utilities provide version control through migration files. Migration files allow developers to modify the database schema and keep track of changes, making it easy to apply updates across different environments.
In CodeIgniter, how do you load a Model inside a Controller?
- $model = new ModelName();
- $this->load->model('ModelName');
- include('ModelName');
- require('ModelName.php');
To load a Model in CodeIgniter, you use the $this->load->model('ModelName'); syntax. This makes the Model available for use within the Controller.
What is the role of 'Profiling' in CodeIgniter when it comes to performance optimization?
- It automates code optimization
- It enhances database design
- It helps in debugging code issues
- It provides insights into the application's performance
'Profiling' in CodeIgniter plays a crucial role in performance optimization by providing insights into the application's performance. It helps developers identify bottlenecks, inefficient queries, and other areas that can be optimized to enhance the overall speed and efficiency of the application.
In CodeIgniter, how can developers regenerate session IDs to enhance security?
- Developers need to manually regenerate session IDs using the regenerate_id() method.
- Regenerating session IDs is not a common practice in CodeIgniter.
- Session IDs are regenerated only on explicit user logout.
- Session IDs in CodeIgniter are regenerated automatically for each request.
To enhance security in CodeIgniter, developers can manually regenerate session IDs using the regenerate_id() method. This ensures that even if a session is compromised, the attacker would have an outdated session ID. Regularly regenerating session IDs is a good practice to minimize the window of opportunity for session-related attacks, contributing to a more secure application.
________ exceptions are used to handle errors that are recoverable during runtime.
- Checked
- Custom
- Fatal
- Unchecked
Checked exceptions are used to handle errors that are recoverable during runtime. These exceptions must be explicitly caught or declared by the method.