Faster way to add resources?

<?php
$pagetitles = 'pagetitle1,pagetitle2,pagetitle3';
$resources = explode(',', $pagetitles);

foreach ($resources as $resource) {
    $res = $this->modx->getObject('modResource', array('pagetitle' => $resource));
    if (!$res) {
        $alias = str_replace(' ', '-', strtolower($resource));
        $fields = array(
            'pagetitle' => $resource,
            'alias' => $alias,
            'published' => $this->modx->getOption('publish_default', null),
            'richtext' => $this->modx->getOption('richtext_default', null),
            'hidemenu' => $this->modx->getOption('hidemenu_default', null),
            'cacheable' => $this->modx->getOption('cache_default', null),
            'searchable' => $this->modx->getOption('search_default', null),
            'context' => $this->modx->getOption('default_context', null),
            'template' => $this->modx->getOption('default_template', null),
        );
        /* @var $res modResource */
        $res = $this->modx->newObject('modDocument', $fields);
        if ($res) {
            $res->setContent("Content goes here");
            $res->save();
            $this->modx->log(MODX::LOG_LEVEL_INFO, '    Created resource object ' . $resource);
        }
        else {
            $this->modx->log(MODX::LOG_LEVEL_INFO, '    Could not create resource object ' .
                $resource);
        }
    } else {
        $this->modx->log(MODX::LOG_LEVEL_INFO, '    Resource already exists: ' .
            $resource);
    }
}