Custom configuration files in CodeIgniter are stored in the ________ directory.
- application/config
- application/configuration
- application/preferences
- application/settings
In CodeIgniter, custom configuration files are stored in the 'application/config' directory. This directory holds various configuration files that control the behavior of the framework and the user's application.
How can Helpers be made globally available in CodeIgniter without loading them in each controller?
- Creating a Custom Library
- Editing the Core Configuration File
- Using Autoload Config
- Utilizing Composer
Helpers can be made globally available in CodeIgniter by using the Autoload Config. By configuring the autoload.php file, developers can specify which Helpers should be loaded globally without the need to include them in each controller separately. This approach enhances code organization and ensures that essential Helpers are readily available throughout the application.
In optimizing a CodeIgniter e-commerce site, focusing on ________ will most effectively enhance user experience during high-traffic events.
- Caching Strategies
- Code Compression
- URL Routing
- User Authentication
Caching strategies play a vital role in optimizing an e-commerce site. By caching frequently accessed data, such as product information, the site can serve content more quickly during high-traffic periods, significantly improving user experience.
How does CodeIgniter's Query Builder handle complex queries involving subqueries?
- By employing the join_subquery() function
- By using the select_subquery() method
- By utilizing the where_in_subquery() method
- Through the from_subquery() method
CodeIgniter's Query Builder supports subqueries using the join_subquery() function, allowing for the integration of subqueries in complex queries.
In the context of file uploads, what is the significance of implementing a file integrity check?
- Detects and prevents tampering or corruption of uploaded files
- Ensures file confidentiality, restricts access to privileged users
- Simplifies file metadata management, improves searchability
- Verifies file format compatibility, enhances cross-browser support
Implementing a file integrity check is essential for detecting and preventing tampering or corruption of uploaded files. This ensures that the files remain intact and unaltered, maintaining the integrity of the data throughout the upload process.
In CodeIgniter, Helpers are not classes but a collection of ________.
- Components
- Functions
- Libraries
- Modules
In CodeIgniter, Helpers are collections of functions, not classes. They are typically stored in the application/helpers directory.
When a web application crashes due to a database error, the first step in exception handling should be to check the ________.
- Database connection and credentials
- Front-end code
- Network connectivity
- Server logs
In the event of a database error, checking server logs is crucial for identifying the root cause and understanding the error details. Examining front-end code or network connectivity is less likely to reveal insights into the database issue.
In CodeIgniter, unit tests are typically written in which programming language?
- JavaScript
- PHP
- Python
- Ruby
Unit tests in CodeIgniter are typically written in PHP, as it is the primary language for CodeIgniter development. The Unit Testing Library in CodeIgniter is designed to work seamlessly with PHP, allowing developers to write effective unit tests for their PHP code.
What is the advantage of using $this->db->get() in CodeIgniter Models?
- It executes a raw SQL query
- It fetches records based on specified conditions
- It retrieves a single record from the database
- It returns the last inserted ID
The $this->db->get() method in CodeIgniter Models is used to fetch records from a database table based on specified conditions. It allows developers to easily perform SELECT queries by providing a clean and readable syntax. The method returns the result set as an object, making it convenient to iterate through the records. This promotes efficient and organized data retrieval within CodeIgniter Models, enhancing the overall maintainability of the application.
In a payment gateway integration, the ________ confirms the transaction's success or failure.
- Callback
- Controller
- Middleware
- Router
The term "callback" in a payment gateway integration context refers to a mechanism where the payment gateway notifies the system about the outcome of a transaction. It confirms whether the transaction was successful or encountered a failure, allowing the system to appropriately handle the result.