The CodeIgniter Model method ________ is used to update existing records in the database.
- alter()
- change()
- modify()
- update()
The correct method for updating existing records in CodeIgniter is update(). This method allows you to modify the data in the database table based on certain conditions.
In the Email Class, ________ is/are used to handle non-English characters in email content.
- Base64 Encoding
- Character Encoding
- HTML Entities
- Unicode Escaping
In the Email Class, character encoding is used to represent non-English characters in a way that can be properly transmitted and displayed. This ensures that the email content is correctly interpreted by email clients, especially when dealing with special characters or non-ASCII characters.
In CodeIgniter, how can you extend the session timeout for a user?
- By adjusting the session timeout setting in the config.php file.
- By modifying the session timeout directly in the database.
- By using the session_extend method in the session library.
- CodeIgniter does not provide a way to extend session timeouts.
By adjusting the session timeout setting in the config.php file. CodeIgniter allows developers to set the session timeout in the config.php file using the sess_expiration parameter. By increasing the value of this parameter, you can extend the session timeout for a user, providing a more flexible and customizable approach to session management in your CodeIgniter applications.
Explain the role of 'trans_status()' function in CodeIgniter's transaction management.
- 'trans_status()' checks whether the current transaction is active or has been rolled back.
- 'trans_status()' is deprecated in the latest CodeIgniter versions.
- 'trans_status()' is used to initiate a new transaction in CodeIgniter.
- 'trans_status()' returns true if the transaction has been successfully completed and false otherwise.
'trans_status()' is a function in CodeIgniter that checks whether the current transaction is marked as successful or has been rolled back. It returns a boolean value, true if the transaction has been successfully completed, and false if it has been rolled back or if no transaction is in progress. This function is handy for checking the status of a transaction and making decisions based on whether it was successful or not.
What is the significance of using mock objects in CodeIgniter unit testing?
- Mock objects are only used in front-end testing.
- Mock objects are used for creating visual elements in unit tests.
- Mock objects are used to execute real database queries.
- Mock objects help simulate the behavior of real objects, making it easier to test individual components in isolation.
In CodeIgniter unit testing, mock objects are essential for isolating the code being tested. They simulate the behavior of real objects, allowing developers to focus on testing specific components without the need for the entire application to be running. This isolation is crucial for identifying and fixing bugs in individual units of code, providing more reliable and effective testing.
Which feature in CodeIgniter helps to filter input data to prevent SQL injection?
- Data Escaping
- Form Validation
- Input Validation
- Query Sanitization
CodeIgniter provides Query Sanitization as a mechanism to prevent SQL injection attacks by escaping and filtering input data.
When a user submits a form, the data is processed by a specific method in a controller. To securely handle this data, the controller should use ________.
- $this->form_validation->run()
- $this->input->get()
- $this->input->post()
- $this->security->xss_clean()
When handling form data in CodeIgniter, it's crucial to sanitize and secure the input. The $this->security->xss_clean() method helps in removing potentially harmful content, preventing cross-site scripting (XSS) attacks.
To enable RESTful API functionality in CodeIgniter, the ________ must be configured correctly.
- Route.php
- autoload.php
- config.php
- database.php
In CodeIgniter, enabling RESTful API requires correct configuration in the 'config.php' file, specifying routes, and ensuring proper setup for the RESTful services.
To prevent script execution in uploaded files, it's important to set the correct ________ on the server.
- Encryption Key
- Execution Permission
- File Extension
- MIME Type
When uploading files, setting the correct MIME type on the server is crucial to prevent the execution of scripts. This ensures that only valid file types are accepted, enhancing security.
In CodeIgniter, how can you enable full query string support in URLs?
- Using the 'enable_query_strings' setting
- Modifying the .htaccess file
- Configuring the routes file
- Enabling the 'query_strings' option in config.php
In CodeIgniter, you can enable full query string support in URLs by setting the 'enable_query_strings' option to true in the 'config.php' file. This allows you to use traditional query string URLs instead of segment-based URLs.
To create a custom Helper in CodeIgniter, the file must be saved in the ________ directory.
- application
- config
- system
- helper
The correct option is "a) application". In CodeIgniter, custom Helper files should be saved in the "application/helpers" directory. This directory ensures that the Helper is accessible to your application.
What is the primary purpose of unit testing in CodeIgniter?
- Analyzing database performance
- Detecting syntax errors
- Evaluating the user interface
- Verifying that individual units of code work as expected
Unit testing in CodeIgniter serves the purpose of verifying that individual units of code, such as functions or methods, work as expected. It ensures that each unit functions correctly in isolation before integrating them into the complete system, enhancing code reliability and maintainability.