The tool in CodeIgniter that provides runtime statistics about the application is called the ________.
- Analyzer
- Debugger
- Inspector
- Profiler
CodeIgniter's Profiler tool provides runtime statistics about the application, aiding in performance analysis and optimization.
The number of records per page in CodeIgniter pagination is set using the ________ configuration option.
- per_page
- records_per_page
- limit
- page_size
In CodeIgniter, the number of records displayed per page is set using the per_page configuration option in the pagination configuration. This option determines how many records to show on each page of the paginated results.
How does the Active Record Class in CodeIgniter handle complex join queries?
- Complex joins are not supported in CodeIgniter Active Record
- Performing joins with the execute_join() method
- Using the join() method
- Utilizing the merge_joins() function
CodeIgniter's Active Record Class provides the join() method for handling complex join queries. It allows you to specify the type of join and the conditions for joining tables, making it flexible for complex queries.
In CodeIgniter, how is the database cache functionality utilized to improve performance?
- Caching entire query result sets
- Caching individual query results
- Caching only metadata of query results
- Caching only query execution plans
CodeIgniter's database cache functionality can be utilized to improve performance by caching entire query result sets. This reduces the need to execute the same queries repeatedly, resulting in faster response times and reduced database load.
When debugging an issue where the data displayed in a view is outdated, the first thing to check in CodeIgniter is ________.
- Browser caching settings
- Controller logic
- Database connection
- View file caching
In CodeIgniter, views can be cached for performance improvement. If you encounter issues with outdated data in the view, the first thing to check is whether the view caching is enabled and if the cached view needs to be refreshed. This ensures that the latest data is displayed to the user.
When limiting the number of results returned by a query in CodeIgniter, the ________ method is employed.
- fetch()
- get_limit()
- limit()
- restrict()
To limit the number of results returned by a query in CodeIgniter, the limit() method is used. It helps in specifying the number of records to be retrieved from the database result set.
What is the role of hooks in modifying the behavior of CodeIgniter controllers?
- Hooks allow you to tap into the core system and execute custom code at specific points
- Hooks are a way to create custom middleware for controllers
- Hooks are only applicable in models, not controllers
- Hooks are used to define URL patterns for routing
Hooks in CodeIgniter enable developers to modify the behavior of the core system at specific execution points. They provide a mechanism to extend or override the default functionality without directly modifying the core files.
In CodeIgniter, how are data passed from the controller to a view?
- By directly accessing controller variables in the view
- Through global variables
- Using the $this->data() method
- Via the $this->load->vars() method
Data is passed from a controller to a view in CodeIgniter using the $this->load->vars() method. This method allows you to set variables that can be accessed within the view. Directly accessing controller variables in the view is not considered a best practice.
What distinguishes a stored XSS attack from a reflected XSS attack?
- Reflected XSS requires user interaction, while stored XSS does not.
- Reflected XSS stores data on the server, while stored XSS reflects data to the user.
- Stored XSS involves persistent injection of malicious scripts, while reflected XSS involves immediate execution without persistence.
- Stored XSS occurs in client-side code, while reflected XSS occurs in server-side code.
Stored XSS refers to attacks where the injected script is permanently stored on the target server, affecting all users who view the compromised page. Reflected XSS, on the other hand, involves the immediate execution of the injected script without persistent storage.
In CodeIgniter, what is the purpose of the $db['default'] array found in the database configuration file?
- It contains the default database query for all models
- It defines the default database connection parameters
- It is used to set the default database driver
- It specifies the default database name for all controllers
The $db['default'] array in CodeIgniter's database configuration file is used to define the default database connection parameters.