In CodeIgniter, the configuration setting $config['sess_ ________'] determines where session data is stored.
- driver
- handler
- path
- storage
The correct configuration setting is $config['sess_driver'], which determines the storage driver for session data in CodeIgniter. This setting specifies whether session data should be stored in the database, files, or other storage mechanisms.
When implementing a caching mechanism for JSON responses, CodeIgniter developers often use _______________.
- APCu
- File
- Memcached
- Redis
CodeIgniter developers often use Redis when implementing a caching mechanism for JSON responses. Redis is an advanced key-value store that provides high-performance caching for improved response times.
What is the role of the 'DB Driver' setting in CodeIgniter's database configuration?
- It defines the database hostname.
- It determines the database port.
- It sets the database username.
- It specifies the type of database connection used by the application.
The 'DB Driver' setting in CodeIgniter's database configuration is crucial as it specifies the type of database connection used by the application. It could be MySQL, PostgreSQL, SQLite, etc. This setting ensures that CodeIgniter communicates with the correct database driver for seamless interaction.
Advanced debugging techniques in CodeIgniter may involve custom ______ to handle exceptions.
- Functions
- Handlers
- Libraries
- Logging
In CodeIgniter, advanced debugging may require the creation of custom exception handlers to handle errors more effectively. These handlers can be used to log errors, send alerts, or perform any specific action when exceptions occur.
In CodeIgniter, which configuration setting determines the level of error logging?
- $config['display_errors']
- $config['error_log']
- $config['error_reporting']
- $config['log_threshold']
The log_threshold configuration setting in CodeIgniter determines the level of error logging. It accepts values from 0 to 4, where 0 means no logging and 4 means logging everything. Adjusting this setting allows you to control the amount of detail recorded in the logs.
In a scenario where emails need to be sent in both plain text and HTML, the Email Class requires the configuration of ________.
- Email body
- Email attachments
- Mail format type
- Email sender's name
The correct option is Mail format type. Configuring the email format type is essential to ensure that the Email Class sends emails in both plain text and HTML as required, catering to different recipient preferences.
Which method in CodeIgniter's database utilities is used to optimize a database?
- optimize()
- optimize_database()
- optimize_tables()
- run_optimization()
The optimize() method in CodeIgniter's database utilities is used to optimize a database. It helps in optimizing and cleaning up the tables in the database, improving performance.
In an application where user roles determine access to different sections, the decision to redirect a user to a specific controller method is based on ________.
- $this->input->ip_address()
- $this->uri->segment()
- Session data
- User role checks
Redirecting users based on their roles involves checking the user's role against predefined roles. This is typically done using conditional statements and user role checks in the controller, ensuring access to specific methods based on the user's role.
In a high-availability setup, how does CodeIgniter handle database failover configuration?
- CodeIgniter cannot be configured for database failover.
- CodeIgniter handles failover by automatically switching to a secondary database server.
- CodeIgniter requires manual intervention for failover.
- CodeIgniter retries the same database server until it is available.
In a high-availability setup, CodeIgniter handles database failover by automatically switching to a secondary database server. This ensures continuous application operation even if the primary database server experiences issues. CodeIgniter simplifies the configuration for failover scenarios, enhancing system reliability.
How does CodeIgniter handle session data when working with AJAX requests?
- By default, CodeIgniter stores session data in cookies.
- CodeIgniter does not support session data in AJAX requests.
- CodeIgniter relies on server-side storage for session data during AJAX requests.
- CodeIgniter uses a special technique to pass the session ID with each AJAX request.
CodeIgniter uses a special technique to pass the session ID with each AJAX request. When an AJAX request is made, CodeIgniter appends the session ID to the request automatically, allowing the server to identify and manage the user's session. This ensures that session data can be used seamlessly in AJAX operations without additional configuration.