require_once('database.php'); $userId = 42; $name = $database->queryField('SELECT name FROM users WHERE user_id = ?', array($userId)); echo $name;In the above example, the queryField function is called on an instance of a database object ("$database") which is initialized from a database.php file. The queryField function takes two arguments: the SQL query and an array of query parameters to be bound to the query. By passing in the user_id value as a parameter, we make the query more secure by guarding against SQL injection attacks. The package library that contains the queryField function is likely a PHP database library such as PDO, mysqli, or a custom library built by the developer.