global $wpdb; $post_count = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts"); echo "There are " . $post_count . " posts in the database.";
use Illuminate\Support\Facades\DB; $user_count = DB::table('users')->count(); echo "There are " . $user_count . " users in the database.";
$query = $this->db->query("SELECT AVG(price) as average_price FROM products"); $average_price = $query->result()[0]->average_price; echo "The average price of products is " . $average_price;In this example, the get_var method is used to retrieve the average price of products using CodeIgniter's database query builder. Package library: CodeIgniter Database Query Builder Overall, the get_var method is a useful function in PHP controllers for retrieving specific variables from query results. The package library determines the exact syntax and usage of this method, but it is commonly found in database access abstraction layers and query builders.