<?php

// add directory where templates are stored
$smarty->addTemplateDir('./templates_1');

// add directory where templates are stored and specify array-key
$smarty->addTemplateDir('./templates_1', 'one');

// add multiple directories where templates are stored and specify array-keys
$smarty->addTemplateDir(array(
    'two' => './templates_2',
    'three' => './templates_3',
));

// view the template dir chain
var_dump($smarty->getTemplateDir());

// chaining of method calls
$smarty->setTemplateDir('./templates')
       ->addTemplateDir('./templates_1', 'one')
       ->addTemplateDir('./templates_2', 'two');

?>