index.php

<?php

require_once dirname(__FILE__, 3) . '/vendor/autoload.php';

use League\Fractal\Manager;
use League\Fractal\Resource\Collection;

$fractal = new Manager();

$users = [
    [
        'id' => '1',
        'name' => 'Admin Account',
        'email' => 'admin@awesomephp.com',
        'email_verified' => true,
        'password' => '123456',
    ],
    [
        'id' => '2',
        'name' => 'Mahmoud Mohamed Ramadan',
        'email' => 'mahmoud@gmail.com',
        'email_verified' => true,
        'password' => '123456',
    ]
];

// Passing this array (collection) into a resource, which will also have a "Transformer"
// This "Transformer" can be a callback or a new instance of a Transformer object
// We type hinting for an array, because each item in the `$users` var is an array 
 
// for more info read...https://fractal.thephpleague.com/glossary/

$resource = new Collection($users, function (array $user) {
    return [
        'id'      => (int) $user['id'],
        'name'    => $user['name'],
        'private' => [
            'email'          => $user['email'],
            'email_verified' => $user['email_verified'],
            'password'       => $user['password'],
        ],
    ];
});

$array = $fractal->createData($resource)->toArray();

echo $fractal->createData($resource)->toJson();