When optimizing a CodeIgniter application for performance, a developer decides to replace a native library with a more efficient third-party library. The key factor to consider in this scenario is __________.
- Compatibility and support for future CodeIgniter versions
- Cost of the third-party library
- Licensing restrictions of the third-party library
- The ease of integration with CodeIgniter
When replacing a native library with a third-party one for performance optimization, compatibility with future CodeIgniter versions is crucial. This ensures that the application remains maintainable and can benefit from future updates without major disruptions.
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 role does escaping user inputs play in securing a database against SQL injection?
- Escaping prevents malicious SQL code from being executed by treating special characters appropriately
- Escaping user inputs helps to encrypt data during transmission
- It allows direct execution of user inputs in SQL queries
- It has no impact on security
Escaping user inputs is crucial as it involves modifying special characters to make them safe for inclusion in SQL statements, preventing attackers from injecting malicious code.
In the context of XSS, what is the purpose of Content Security Policy (CSP)?
- Control access to databases
- Encrypt sensitive data
- Restrict the sources of content that can be loaded
- Validate form inputs
Content Security Policy (CSP) is a security standard that helps prevent XSS attacks by allowing website owners to specify the trusted sources of content. It restricts the execution of scripts to trusted domains, reducing the risk of malicious script injection.
In CodeIgniter, setting the ________ parameter to FALSE disables auto-commit for the transaction.
- auto_commit
- commit_mode
- disable_auto_commit
- transaction_auto
Setting the auto_commit parameter to FALSE in CodeIgniter disables auto-commit for the transaction. This means changes won't be automatically saved to the database, giving you more control over when to commit.
What is a 'custom exception' and when should it be used?
- A user-defined exception created to handle specific error conditions
- An exception that is never used in practice
- An exception that occurs only in custom-built applications
- An exception thrown by the programming language itself
A 'custom exception' is an exception defined by the programmer to handle specific error conditions in their code. It should be used when there are unique error scenarios that require special handling beyond the standard exceptions provided by the language.
In CodeIgniter, the logging level that includes error messages, debug messages, and informational messages is known as ________.
- ALL
- DEBUG
- ERROR
- INFO
The logging level ALL in CodeIgniter includes error messages, debug messages, and informational messages, providing a comprehensive view of the application's log.
In complex applications, ________ can be used to automatically run unit tests in different environments.
- CodeIgniter CLI
- Composer
- Continuous Integration
- Deployment Script
In complex applications, Continuous Integration (CI) is used to automatically run unit tests in different environments. CI systems like Jenkins or Travis CI integrate seamlessly with CodeIgniter, automatically triggering unit tests upon code changes. This ensures consistent code quality and identifies issues early in the development cycle.
Which feature of CodeIgniter simplifies the handling of complex XML structures?
- XML Configuration Files
- XML Data Models
- XML Helper Functions
- XML Parser Class
CodeIgniter simplifies the handling of complex XML structures through its XML Parser Class. This class allows developers to easily parse and manipulate XML data within their applications, providing a convenient way to work with XML content.