Shows how to create a temporary url to upload a file directly to a Rackspace container.

Rackspace Container Upload

//http://docs.php-opencloud.com/en/latest/index.html

$client = new Rackspace(
	Rackspace::US_IDENTITY_ENDPOINT, array(
	  'username' => '{{username}}',
	  'apiKey' => '{{apiKey}}'
	)
);
$objectStoreService = $client->objectStoreService(null, 'ORD', 'publicURL');
$container = $objectStoreService->getContainer('{{container_name}}');

//update the container headers for CORS
$container->saveMetadata(array(
	'Access-Control-Allow-Origin' => '{{your_domain}}'
));

$object = $container->dataObject();
$object->setName("{{filename}}"); //probably a GUID
$url = $object->getTemporaryUrl(3000, "PUT");

//give url to the client