modxSmarty test

gistfile1.php

<?php
// snippet
<?php
$array = array(
    "foo" => "bar",
    "bar" => "foo",
    100   => -100,
    200  => 100,
);
$modx->smarty->assign('array',$array);
// template
$modx->runSnippet('testSmarty');
return $modx->smarty->fetch("test.tpl");
//test.tpl 10000
{field name=content}
{foreach $array as $object}
    <li>{$object@key} - {$object}</li>
{/foreach}