public static function remove_property($dataDir = null)
{
# Instantiate the Presentation class that represents the presentation
$pres = new Presentation($dataDir . "HelloWorld.pptx");
# Getting Document Properties
$dp = $pres->getDocumentProperties();
# Getting property name at particular index
$property_name = $dp->getPropertyName(2);
# Removing selected property
$dp->remove($property_name);
# Saving presentation
$save_format = new SaveFormat();
$pres->save($dataDir . "RemoveDP.pptx", $save_format->Pptx);
print "Remove document property, please check output file.";
}
