When refactoring an existing application, a developer decides to replace core library functions with a custom library. The first step in this process should be ________.
- Analyze the existing library functions
- Create a backup of the original code
- Identify the dependencies of the existing functions
- Update the application configuration
Before replacing core library functions, it's crucial to identify the dependencies of the existing functions. This involves understanding which parts of the application rely on the current functionality. This step helps prevent unintended consequences and ensures a smooth transition to the custom library.
In CodeIgniter, unit tests are typically run using the ________ tool.
- CodeTester
- PHPUnit
- Selenium
- UnitCheck
PHPUnit is the primary testing tool used in CodeIgniter for running unit tests. It provides a robust framework for testing PHP code, including features for assertions and mocking.
What advanced technique is used in CodeIgniter for optimizing JSON and XML data serialization and deserialization?
- Benchmarking
- Caching
- REST API
- XML-RPC
In CodeIgniter, caching is a common technique used to optimize JSON and XML data serialization and deserialization. Caching reduces the processing time by storing the results of expensive operations.
________ is a key technique in optimizing RESTful APIs in CodeIgniter for better performance.
- Caching
- Encryption
- Middleware
- Throttling
Caching is a crucial technique in CodeIgniter for optimizing RESTful APIs. It involves storing the results of expensive API calls and returning the cached result when the same inputs occur again. This reduces the load on the server and improves overall performance.
To prevent CSRF, a ________ token is often added to forms as a hidden field.
- CSRF
- Random
- Session
- Token
CSRF protection
Which method is used in CodeIgniter to encrypt and decrypt data securely?
- Cipher library
- Encryption is not supported
- OpenSSL library
- mcrypt library
CodeIgniter uses the OpenSSL library for secure encryption and decryption of data. OpenSSL provides a robust set of cryptographic functions, and CodeIgniter leverages it to ensure the confidentiality and integrity of sensitive information. Avoiding outdated libraries like mcrypt is crucial for maintaining security.
In the context of the Email Class, what is the significance of setting MIME types?
- MIME types are irrelevant when dealing with emails.
- MIME types are used to determine the file extension of attachments.
- MIME types define the media type of the email content, such as text or HTML.
- MIME types help in compressing email attachments.
Setting MIME types in the Email Class is crucial for defining the media type of the email content. For example, specifying 'text/html' indicates that the email contains HTML content. It ensures proper rendering on the recipient's end.
For enhanced security, file upload paths should be kept outside the ________ directory.
- application
- public
- root
- system
Keeping file upload paths outside the "application" directory is crucial for security. The "application" directory contains sensitive files related to the CodeIgniter application, and exposing it can pose a security risk.
What is the primary purpose of a Model in CodeIgniter?
- Data manipulation
- Database connectivity
- File handling
- User interface design
In CodeIgniter, a Model is primarily used for database connectivity. It facilitates data manipulation and interacts with the database, ensuring separation of concerns in the MVC architecture.
How does a 'stack trace' aid in debugging exceptions?
- A stack trace is a tool for creating new function calls during debugging.
- A stack trace is irrelevant in debugging exceptions.
- A stack trace is only useful for tracing the execution of loops in the code.
- A stack trace provides a detailed report of the function calls and their sequence leading to the point where an exception occurred.
A stack trace is a crucial tool in debugging as it reveals the entire call stack leading to the point where the exception was thrown. It assists developers in identifying the flow of execution, making it easier to pinpoint and fix issues.