$db = new PDO("mysql:host=localhost;dbname=test", "username", "password"); $stmt = $db->prepare("SELECT * FROM users"); $stmt->execute(); $results = $stmt->fetchAll();
$conn = pg_connect("host=localhost dbname=test user=username password=password"); $result = pg_query($conn, "SELECT * FROM users"); $results = pg_fetch_all($result);In this example, we establish a connection to a PostgreSQL database using the pg_connect() function. We then execute a query to select all rows from the "users" table using the pg_query() function. Finally, we use the pg_fetch_all() function to retrieve all rows from the result set as an array. Based on the use of PDO and pgsql, it can be determined that the package library being used is most likely a database abstraction layer.