What is the role of the log_message() function in CodeIgniter?
- It displays messages on the user interface for debugging.
- It logs messages to the console.
- It logs messages to the system log file.
- It sends email notifications for critical errors.
The log_message() function in CodeIgniter is used to log messages to the system log file. It's a handy way to record information or errors for later analysis, especially in production environments where direct debugging may not be possible.
In a multi-developer environment, managing __________ for third-party libraries is crucial for consistent functionality in CodeIgniter applications.
- Collaborations
- Configurations
- Dependencies
- Versions
In a multi-developer environment, managing configurations for third-party libraries is crucial for consistent functionality in CodeIgniter applications. This involves maintaining consistent settings and configurations across different development environments, ensuring that the libraries work uniformly across the team.
Which file in CodeIgniter is used to set up database connection details?
- config.php
- connections.php
- database.php
- db_config.php
In CodeIgniter, the database.php file is used to store and configure database connection details, including hostname, username, password, and database name. This centralizes database settings.
When configuring a CodeIgniter application for a financial service, the first step in enhancing security should focus on ________.
- Enforcing Strict Session Management
- Implementing HTTPS
- Securing Database Connections
- Validating User Inputs
In a financial service, the first step in enhancing security is often to implement HTTPS. This ensures that data transmission between the user's browser and the server is encrypted, reducing the risk of eavesdropping and man-in-the-middle attacks. HTTPS is a fundamental step in securing sensitive financial information.
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 is the impact of using the 'strict' mode in CodeIgniter transactions?
- 'Strict' mode ensures that transactions are executed only if the database engine supports transactions.
- 'Strict' mode has no impact on CodeIgniter transactions.
- 'Strict' mode prevents CodeIgniter from automatically rolling back a transaction if an error occurs during its execution.
- In 'strict' mode, CodeIgniter throws an exception if any database error occurs during a transaction.
When 'strict' mode is enabled, CodeIgniter will automatically roll back a transaction if any database error occurs during its execution. This helps maintain data integrity by preventing the application from continuing with potentially corrupt data. It ensures that transactions are handled more cautiously, and the system responds promptly to any issues that may compromise the transaction.
In a blog application, when a post is updated, the Active Record Class method sequence that is most appropriate is: ________.
- set()
- update()
- update_batch()
- where()
The correct sequence for updating a record in CodeIgniter using Active Record is set() to set the values, followed by where() to specify the condition, and then update() to perform the update. update_batch() is used for updating multiple records simultaneously.
The ________ method in CodeIgniter is used to load a library, helper, or model.
- import()
- include()
- load()
- require()
The load() method in CodeIgniter is used to load a library, helper, or model. It is a fundamental method for loading various resources into your CodeIgniter application, facilitating code organization and reuse.