In CodeIgniter, where are log files typically stored?
- application/logs/
- logs/
- storage/logs/
- system/logs/
CodeIgniter log files are typically stored in the 'application/logs/' directory. This is the default location where the framework stores log files, and developers can access them for debugging and analysis purposes.
When experiencing database connectivity issues in a CodeIgniter application, the first place to check is the ________ settings in the database configuration file.
- Connection Settings
- Database Name
- Hostname
- Username
In the context of CodeIgniter, when facing database connectivity issues, the first place to check is the Hostname settings in the database configuration file. This setting specifies the location of your database server.
When designing a RESTful API in CodeIgniter, what format is typically used to send responses?
- CSV
- HTML
- JSON
- XML
In CodeIgniter, JSON is the typical format used to send responses in a RESTful API. JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is well-suited for representing structured data in the context of a RESTful API.
The function ________ in CodeIgniter is used to reverse all database actions since the last commit.
- reverseCommit()
- revertChanges()
- rollback()
- undoTransaction()
The rollback() function in CodeIgniter is used to reverse all database actions since the last commit. It's helpful when you want to discard changes made during a transaction.
The CodeIgniter helper function ________ is used to set JSON content type in HTTP headers.
- json_header()
- set_content_type('application/json')
- set_json_content_type()
- set_json_header()
The set_content_type('application/json') helper function is used in CodeIgniter to set the HTTP response headers to indicate that the content being sent is in JSON format.
During a high traffic period, a CodeIgniter application experiences slow response times. To identify the bottleneck, the developer should examine the ________ in the profiler.
- Controller Execution Time
- Database Queries
- Memory Usage
- Query Execution Time
In a high traffic scenario, examining the Controller Execution Time in the profiler helps identify bottlenecks related to the application's controller execution, providing insights into areas causing slow response times.
CodeIgniter's pagination can be integrated with database results using the ________ method from the Model.
- get_pagination()
- initialize_pagination()
- paginate()
- render()
In CodeIgniter, pagination with database results is achieved using the paginate() method. This method helps in generating the necessary pagination links for displaying data across multiple pages.
What are the challenges faced when unit testing CodeIgniter applications that heavily rely on database interactions?
- CodeIgniter applications do not support database testing.
- Database interactions in CodeIgniter do not pose any challenges.
- Database tests in CodeIgniter are always fast and efficient.
- Handling database connections and ensuring a clean state between tests.
Unit testing CodeIgniter applications with heavy database interactions can be challenging due to the need to manage database connections and maintain a clean state between tests. This is crucial to avoid interference between test cases and ensure reliable and accurate results.
How does the Active Record Class handle SQL injection prevention in CodeIgniter?
- By escaping user inputs using the escape() method
- By manually sanitizing input using PHP functions
- By relying on the built-in CodeIgniter firewall
- By using parameterized queries
The Active Record Class in CodeIgniter handles SQL injection prevention by using parameterized queries. This approach ensures that user inputs are treated as data rather than executable code, making it more difficult for malicious SQL injection attacks to occur. It helps prevent the injection of unauthorized SQL code into database queries, enhancing the security of the application.
How can you extend the functionalities of an existing CodeIgniter library?
- Create a new library
- Extend the library class
- Modify the core library file
- Use hooks
To extend the functionalities of an existing CodeIgniter library, you should create a new library that extends the original library class. This way, you can add or override methods to customize the behavior without modifying the core library file. Extending the library class allows you to reuse existing functionality while introducing your modifications.