In CodeIgniter, which function is used to load multiple Helpers at once?
- load with an array parameter
- load_helpers()
- load_helpers_array()
- load_multiple()
In CodeIgniter, the load function with an array parameter is used to load multiple Helpers at once. You can pass an array of Helper names, and CodeIgniter will load all of them, making it convenient when you need to use multiple Helpers in a controller or model.
Advanced CodeIgniter performance optimization often involves fine-tuning:
- Caching mechanisms
- Database queries
- Front-end code
- Server configuration
Fine-tuning caching mechanisms, such as optimizing query caching and view caching, is crucial for advanced CodeIgniter performance optimization. It helps reduce the load on the server and speeds up application response times.
In CodeIgniter, which global array is used to define database connection parameters?
- $config['database']
- $database_params
- $db_config
- $db_params
The correct global array to define database connection parameters in CodeIgniter is $config['database']. This array holds values such as 'hostname', 'username', 'password', 'database', etc.
A developer finds that uploaded image files are being executed as scripts on the server. This indicates a failure in ________.
- Content-Type Headers
- File Permissions
- Input Validation
- Output Escaping
When image files are executed as scripts, it suggests a lack of proper input validation, allowing malicious content to be processed. Input validation ensures that the uploaded files are of the expected type and do not contain harmful code.
When encountering a 'database connection error' in a deployed CodeIgniter application, the immediate step is to check the ________ configuration.
- Caching Configuration
- Database Connection
- Error Logging
- Server Environment Configuration
In the case of a 'database connection error' in a deployed CodeIgniter application, the immediate step is to check the database connection configuration. This involves verifying the database hostname, username, password, and database name in the database.php configuration file to ensure they match the production environment.
In CodeIgniter, which library is commonly used for building RESTful APIs?
- Database_Library
- Form_Validation
- REST_Controller
- Session_Library
The REST_Controller library is commonly used in CodeIgniter for building RESTful APIs. It provides a set of convenient methods for handling RESTful requests and responses, making it easier to implement RESTful architecture in your CodeIgniter application.
What is the impact of high-level logging on the performance of a CodeIgniter application?
- High-level logging is not supported in CodeIgniter
- Improves performance by reducing errors
- Negligible impact
- Significant impact, leading to slower performance
High-level logging in CodeIgniter can have a significant impact on performance, potentially causing slower response times due to increased log processing.
In CodeIgniter, efficient use of ________ can significantly reduce database load.
- Active Record
- Database Transactions
- Eloquent ORM
- Query Builder
CodeIgniter's Query Builder provides a convenient way to interact with databases. By using it efficiently, you can optimize queries and reduce database load, leading to improved performance in database operations.
What is the primary purpose of logging in CodeIgniter?
- Data storage
- Debugging
- Error tracking
- User activity tracking
The primary purpose of logging in CodeIgniter is to track errors and issues within the application. It helps developers identify and fix problems, leading to a more robust and stable application.
To ensure backward compatibility in a CodeIgniter application update, unit testing should prioritize ________.
- CodeIgniter core functionalities
- Handling deprecated functions
- New features and enhancements
- User interface changes
To ensure backward compatibility, unit testing should prioritize handling deprecated functions. This ensures that the existing functionalities remain intact even with the updates.