In CodeIgniter, which function is commonly used to send JSON responses to client-side requests?
- json_encode()
- json_response()
- output->json()
- send_json()
In CodeIgniter, the correct function for sending JSON responses to client-side requests is send_json(). This function is a part of the output class and is commonly used to format and send JSON data in the response. It simplifies the process of handling JSON data in CodeIgniter applications.
The database configuration file in CodeIgniter is located at application/config/________.php.
- config
- database
- database.php
- dbconfig
The database configuration file in CodeIgniter is located at application/config/database.php. It holds settings such as database connection details, type, hostname, username, password, and other database-specific configurations. Developers customize this file to establish database connections and configure database-related settings.
What are DKIM and SPF, and why are they important in email integration?
- DKIM (DomainKeys Identified Mail) provides a digital signature to verify the sender's identity, while SPF (Sender Policy Framework) specifies which mail servers are authorized to send emails on behalf of a domain.
- DKIM and SPF are alternative names for email attachments.
- DKIM and SPF are both email delivery services.
- DKIM ensures secure email encryption, while SPF enhances email content filtering.
DKIM and SPF are essential in email integration. DKIM provides a digital signature to verify the sender's identity, and SPF specifies authorized mail servers. Together, they enhance email security and reduce the risk of email spoofing.
In CodeIgniter, what is the significance of the 'core' subdirectory within the 'application' directory?
- It contains configuration files for the core system.
- It houses the core system files of CodeIgniter.
- It is used for storing core database configurations.
- It is where the main application logic resides.
The 'core' subdirectory within the 'application' directory contains the core system files of CodeIgniter, essential for the framework's functionality and behavior.
In CodeIgniter 4, how does the Model's 'find' method enhance data retrieval flexibility?
- Allowing cross-database querying for distributed systems
- Enabling custom SQL queries for precise data retrieval
- Facilitating the retrieval of records based on primary key values
- Implementing automatic caching for improved performance
In CodeIgniter 4, the Model's 'find' method enhances data retrieval flexibility by facilitating the retrieval of records based on primary key values. This method simplifies the process of fetching a specific record from the database, providing a convenient and efficient way to retrieve data using the primary key as a reference.
During a high traffic period, a CodeIgniter application starts throwing database errors. The best practice to handle this scenario involves ________.
- Implementing Caching Mechanisms
- Implementing Database Connection Pooling
- Increasing the Database Query Timeout
- Using Shared Database Connections
During high traffic, using shared database connections in CodeIgniter is a recommended practice. It helps manage and reuse existing database connections, reducing the impact of opening and closing connections frequently during peak times.
What file extension is typically used for views in CodeIgniter?
- .ci
- .html
- .php
- .view
In CodeIgniter, views are typically saved with a .php extension. This allows the server to interpret and process the PHP code within the view file. The .html extension is not commonly used for CodeIgniter views.
A common method to sanitize user input and prevent XSS is using ________ encoding.
- Base64
- HTML
- URL
- XSS
HTML encoding helps prevent XSS attacks by converting special characters to their HTML entities, making them harmless.
When optimizing database interactions in CodeIgniter, using ________ can lead to better performance.
- Active Record
- Data Mappers
- Eloquent ORM
- Raw SQL Queries
CodeIgniter's Active Record is a powerful database abstraction class that simplifies and enhances database interactions. Utilizing Active Record can lead to cleaner code, improved security, and better performance compared to raw SQL queries.
What is the role of $this->load->view() function in CodeIgniter?
- It includes an external PHP file in the view.
- It loads a library into the controller.
- It loads a model into the controller.
- It renders the specified view file.
The $this->load->view() function in CodeIgniter is used to render the specified view file. It loads the view and displays its content, allowing the controller to pass data to the view for presentation to the user.