setRtl

require_once 'classes/CreatePptx.php';

$pptx = new CreatePptx();
$pptx->setPresentationSettings(array('rtl' => true));
$pptx->setRtl();

$pptx->addSlide(array('layout' => 'Title and Content', 'active' => true));

$content = array(
    'text' => 'My custom title',
    'bold' => true,
    'font' => 'Arial',
    'fontSize' => 60,
);
$pptx->addText($content, array('placeholder' => array('name' => 'Title 1')));

$content = array(
    'Item 1',
    'Item 2',
    'Item 3',
);
$pptx->addList($content, array('placeholder' => array('name' => 'Content Placeholder 2')));

$pptx->savePptx('output');

The resulting PPTX looks like:

Release notes

phppptx 1.0:
- new method.