// Assume we have an array of user information $users = array( array('id' => 1, 'name' => 'John Doe'), array('id' => 2, 'name' => 'Jane Smith'), array('id' => 3, 'name' => 'Bob Johnson') ); // Retrieve the name of user with ID 2 $user = array_filter($users, function($u) { return $u['id'] === 2; }); echo $user[0]['name']; // Outputs "Jane Smith"In this example, we use the array_filter function to find the user whose ID matches 2. We then access the 'name' attribute of the resulting array to retrieve the user's name. The by_id method is not part of a specific package library in PHP, but it is commonly used in web frameworks such as Laravel and CodeIgniter.