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.
When debugging an issue where the data displayed in a view is outdated, the first thing to check in CodeIgniter is ________.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 If you encounter issues with outdated data in the view, the first thing to check is whether the view caching is enabled and if the cached view needs to be refreshed.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.
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.
Describe the role of continuous integration in the context of unit testing in CodeIgniter.
- Continuous integration helps automate the execution of unit tests in a consistent environment.
- Continuous integration is irrelevant to unit testing in CodeIgniter.
- Continuous integration is only necessary for large projects.
- Unit testing and continuous integration are unrelated processes.
Continuous integration plays a crucial role in unit testing in CodeIgniter by automating the execution of tests in a consistent environment. This ensures that tests are run regularly, providing timely feedback on code changes and helping maintain code quality throughout development.
How do you load a Helper in a CodeIgniter controller?
- $this->load->helper('helper_name');
- $this->helper->load('helper_name');
- include_helper('helper_name');
- require_once('helper_name');
In a CodeIgniter controller, you load a Helper using the syntax $this->load->helper('helper_name');. This makes the functions within the helper available for use in the controller. Incorrect options do not represent the correct way to load a Helper in CodeIgniter.
A developer wants to pass user profile data to a dashboard view in CodeIgniter. The most efficient approach is to use ________.
- $this->load->view('dashboard', $data);
- $this->load->view('dashboard', compact('data'));
- $this->load->view('dashboard', ['data' => $data]);
- $this->load->view('dashboard', array('data' => $data));
In CodeIgniter, the most efficient way to pass data to a view is by using an associative array. The option 3 demonstrates the correct syntax by passing the data directly within the load->view function. This approach keeps the code concise and readable.
The Active Record Class method ________ is used to delete records from the database.
- delete()
- destroy()
- erase()
- remove()
The correct method to delete records from the database using the Active Record Class in CodeIgniter is delete(). This method allows you to specify the table and the criteria for deletion.
Which function in CodeIgniter displays all PHP errors occurring in the script?
- display_errors()
- show_php_errors()
- log_php_errors()
- log_errors()
In CodeIgniter, the display_errors() function is used to display all PHP errors occurring in the script. This is often helpful during development to catch and address errors promptly. Enabling this option can be done in the configuration files of CodeIgniter. It's crucial to note that displaying errors in a production environment should be avoided for security reasons, and error logs should be used instead.