<?php

// add directory where plugins are stored
$smarty->addPluginsDir('./plugins_1');

// add multiple directories where plugins are stored
$smarty->setPluginsDir(array(
    './plugins_2',
    './plugins_3',
));

// view the plugins dir chain
var_dump($smarty->getPluginsDir());

// chaining of method calls
$smarty->setPluginsDir('./plugins')
       ->addPluginsDir('./plugins_1')
       ->addPluginsDir('./plugins_2');

?>