How can CodeIgniter be used to efficiently retrieve and display data in PHP applications?

CodeIgniter provides a built-in database library that allows for efficient retrieval and display of data in PHP applications. By utilizing CodeIgniter's active record class, developers can easily write database queries in a simplified and secure manner. This helps in ensuring that data is retrieved efficiently and displayed accurately in the application.

// Example code snippet using CodeIgniter to retrieve and display data

// Load the database library in CodeIgniter
$this->load->database();

// Retrieve data from the database using the active record class
$query = $this->db->get('table_name');

// Display the retrieved data in a view
$data['results'] = $query->result();
$this->load->view('data_view', $data);