For complex schema changes, ________ should be used to avoid data loss during migrations.
- $this->db->modify()
- $this->db->protect()
- $this->db->update()
- Database Seeder
In CodeIgniter, $this->db->protect() should be used for complex schema changes to avoid data loss during migrations by wrapping column and table names with backticks.
What is the difference between checked and unchecked exceptions?
- Checked exceptions are explicitly declared in the code, and the compiler enforces their handling.
- Checked exceptions are never thrown by CodeIgniter applications.
- Unchecked exceptions are always caught at compile time.
- Unchecked exceptions are those that must be caught at runtime.
Checked exceptions in CodeIgniter are explicitly declared in the code, and the compiler mandates their handling. On the other hand, unchecked exceptions don't require explicit handling and can be caught at runtime. Understanding this distinction is essential for robust error management in CodeIgniter.
How does implementing a Content Security Policy (CSP) help in the context of file uploads?
- Enhances file compression, improves overall system performance
- Prevents cross-site scripting (XSS) attacks, restricts unauthorized file access
- Simplifies file validation, streamlines upload workflow
- Speeds up file upload process, reduces server load
Implementing a Content Security Policy (CSP) is crucial in preventing cross-site scripting (XSS) attacks and restricting unauthorized file access. It provides an additional layer of security by controlling which sources are allowed to load, mitigating the risk of malicious file uploads.
What is the significance of 'HTTP Strict Transport Security' (HSTS) in CodeIgniter?
- Enforces the use of secure connections by instructing browsers to only connect over HTTPS
- Enhances session management for improved user experience
- Facilitates client-side validation for form inputs
- Improves database performance through optimized queries
'HTTP Strict Transport Security' (HSTS) in CodeIgniter enforces the use of secure connections by instructing browsers to only connect over HTTPS. This helps prevent man-in-the-middle attacks and enhances overall application security.
How can a controller in CodeIgniter pass data to a view?
- Using $this->data('key', 'value')
- Using $this->load->set('key', 'value')
- Using $this->load->view('view_name', $data)
- Using $this->view->set('key', 'value')
In CodeIgniter, data can be passed to a view by using the $this->load->view('view_name', $data) method, where 'view_name' is the name of the view file, and $data is an associative array containing the data to be passed.
In CodeIgniter, the naming convention for custom library files is ________.
- Customlibrary.php
- Library.php
- Library_custom.php
- My_library.php
The naming convention for custom library files in CodeIgniter is to use the format 'My_library.php' where 'My' is a user-defined prefix, and 'library' is the name of the library. This convention helps maintain consistency and avoid naming conflicts.
In CodeIgniter, handling different API versions is typically achieved through ________.
- Dependency Injection
- Middleware
- Routing
- Versioning
Handling different API versions in CodeIgniter is commonly achieved through versioning. This involves incorporating the API version into the URI or request headers, allowing developers to make changes to the API without affecting existing clients.
How does the Query Builder in CodeIgniter help in preventing SQL injection?
- It automatically escapes data used in queries
- It enforces strict input validation
- It restricts the use of certain SQL keywords
- It uses a complex encryption algorithm
The Query Builder in CodeIgniter helps prevent SQL injection by automatically escaping data used in queries. This means that user input is sanitized before being included in the SQL statement, reducing the risk of malicious SQL injection attacks. It adds a layer of security by handling the proper escaping of data, making the application more robust against common security threats.
In the context of SQL injection, what is the significance of using stored procedures?
- Stored procedures add an extra layer of security by encapsulating SQL logic
- Stored procedures are only used for performance optimization
- Stored procedures have no impact on SQL injection prevention
- Stored procedures make SQL injection attacks more potent
Using stored procedures can enhance security by encapsulating SQL logic on the server side, reducing the risk of SQL injection attacks as user inputs are not directly embedded in the query.
CodeIgniter's advanced database configuration enables the use of different database ________ for reading and writing operations.
- connections
- credentials
- engines
- servers
CodeIgniter's advanced database configuration enables the use of different database connections for reading and writing operations. This allows for optimization and control over database interactions based on the type of operation being performed.