b.volt

<table>
{% for user in users %}
  <tr>
		<td> {{ user.id }} </td>
		<td> {{ user.username }} </td>
	</tr>
{% endfor %}
</table>

volt.php

$r = new Phalcon\Mvc\View\Engine\Volt\Compiler();

$r->compile('b.volt');

$user1 = new stdClass();
$user1->id = 1;
$user1->username = 'hello-1';

$user2 = new stdClass();
$user2->id = 2;
$user2->username = 'hello-2';

$users = array(
  $user1,
	$user2
);

require $r->getCompiledTemplatePath();