What does setting the logging threshold to 4 in CodeIgniter do?
- Display all messages, including debugging
- Display only error messages
- Display only information messages
- Display only messages with a severity level of 4
Setting the logging threshold to 4 in CodeIgniter means that only messages with a severity level of 4 (INFO) and higher will be displayed. It helps in controlling the verbosity of the log messages based on their severity.
How can database queries be optimized in CodeIgniter using configuration settings?
- Disable Persistent Connections
- Enable Query Caching
- Increase Memory Limit
- Use a Larger Database Server
CodeIgniter allows optimizing database queries through the configuration setting 'enable_query_cache.' By enabling query caching, CodeIgniter will store the result of queries in cache, reducing the load on the database server and improving performance.
When integrating third-party APIs, a developer creates a Helper to manage API requests. This Helper should be stored in ________.
- controllers
- helpers
- models
- views
The Helper for managing API requests should be stored in the helpers directory. This helps in organizing and maintaining code related to external API integrations separately.
The ________ method in the Pagination class is used to create pagination links.
- build()
- create_links()
- generate()
- paginate()
The create_links() method in the Pagination class is used to generate HTML pagination links based on the configuration set. It creates the links you can use for navigating through different pages of the paginated results.
In a high-load CodeIgniter application, what technique is recommended for managing session data to optimize performance?
- Cookie-based sessions
- Database-driven sessions
- File-based sessions
- In-memory sessions
In high-load scenarios, managing sessions in a database can be more scalable and efficient, reducing the burden on the server and enhancing overall performance.
What is the most efficient way to ensure that a third-party library is compatible with different versions of CodeIgniter?
- Regularly check for updates and patches from the library's developer
- Stick to the same version of CodeIgniter for all projects using the library
- Use version-agnostic functions and features provided by the library
- Write a wrapper class that adapts the library's code to different CodeIgniter versions
To ensure compatibility with different CodeIgniter versions, it's advisable to use version-agnostic functions and features provided by the third-party library. This approach allows the library to adapt to various CodeIgniter versions seamlessly, reducing the likelihood of issues when upgrading the framework. Additionally, regularly checking for updates and patches from the library's developer helps to stay informed about any changes or improvements related to CodeIgniter compatibility.
A common method to secure file uploads is to validate the file's ________ and size.
- Extension
- Hash
- Permissions
- Signature
Validating the file's extension and size is a common practice to enhance security during file uploads. This prevents malicious files and ensures that the file adheres to acceptable size limits.
Which type of form validation occurs on the server-side after the data is submitted?
- Client-side validation
- Front-end validation
- Real-time validation
- Server-side validation
Server-side validation is performed on the server after the form is submitted. It is essential for security and data integrity, as it can't be bypassed by users. Server-side validation checks input against predefined rules, reducing the risk of accepting invalid or malicious data.
In a CSP policy, the directive ________ is used to control sources of script execution.
- font-src
- img-src
- script-src
- style-src
The 'script-src' directive in a Content Security Policy (CSP) is used to control the sources from which scripts can be executed on a web page.
In CodeIgniter, reducing the number of ________ can significantly improve application performance.
- Controllers
- Database Queries
- Models
- Views
By optimizing and reducing the number of database queries, developers can significantly enhance the performance of their CodeIgniter applications. Efficient database interactions are crucial for a well-performing application.