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.
How does CodeIgniter's Content Security Policy (CSP) enhance web application security?
- Enhances database encryption for improved security
- Mitigates Cross-Site Scripting (XSS) attacks by restricting the sources of content
- Provides a user authentication layer for added security
- Speeds up page loading through optimized caching
CodeIgniter's Content Security Policy (CSP) helps mitigate Cross-Site Scripting (XSS) attacks by restricting the sources of content. This adds an extra layer of protection against malicious scripts injected into web pages.
To configure SMTP settings for sending emails in CodeIgniter, one must edit the ________ file.
- config.php
- email.php
- settings.php
- smtp.php
In CodeIgniter, SMTP settings for sending emails are configured in the email.php configuration file. This file allows you to specify various email-related settings, including the SMTP server configuration.
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.
In CodeIgniter, where are log files typically stored?
- application/logs/
- logs/
- storage/logs/
- system/logs/
CodeIgniter log files are typically stored in the 'application/logs/' directory. This is the default location where the framework stores log files, and developers can access them for debugging and analysis purposes.
When experiencing database connectivity issues in a CodeIgniter application, the first place to check is the ________ settings in the database configuration file.
- Connection Settings
- Database Name
- Hostname
- Username
In the context of CodeIgniter, when facing database connectivity issues, the first place to check is the Hostname settings in the database configuration file. This setting specifies the location of your database server.
When designing a RESTful API in CodeIgniter, what format is typically used to send responses?
- CSV
- HTML
- JSON
- XML
In CodeIgniter, JSON is the typical format used to send responses in a RESTful API. JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is well-suited for representing structured data in the context of a RESTful API.
The function ________ in CodeIgniter is used to reverse all database actions since the last commit.
- reverseCommit()
- revertChanges()
- rollback()
- undoTransaction()
The rollback() function in CodeIgniter is used to reverse all database actions since the last commit. It's helpful when you want to discard changes made during a transaction.
What are the challenges faced when unit testing CodeIgniter applications that heavily rely on database interactions?
- CodeIgniter applications do not support database testing.
- Database interactions in CodeIgniter do not pose any challenges.
- Database tests in CodeIgniter are always fast and efficient.
- Handling database connections and ensuring a clean state between tests.
Unit testing CodeIgniter applications with heavy database interactions can be challenging due to the need to manage database connections and maintain a clean state between tests. This is crucial to avoid interference between test cases and ensure reliable and accurate results.