function actionAlter()
{
// Create the URL object
$url = new YDUrl('http://www.yellowduck.be:8080/directory/test/?do=x&id=1#10');
// Show the original URL
YDDebugUtil::dump($url->getUrl(), 'The original URL');
// Get the contents of a query variable
$do = $url->getQueryVar('do', 'y');
// Update a query variable
$url->setQueryVar('do', 'y');
// setQueryVar can also be used to add a query variable
$url->setQueryVar('new', 'value');
// Deleting a query variable
$url->deleteQueryVar('new');
// Set a named part
$url->setNamedPart('host', 'yellowduck.be');
$url->setNamedPart('user', 'pieter');
$url->setNamedPart('pass', 'kermit');
$url->setNamedPart('port', '8081');
$url->setNamedPart('path', '/dir/index.php');
$url->setNamedPart('fragment', '12');
$url->setQueryVar('id', '22');
// Show the new URL
YDDebugUtil::dump($url->getUrl(), 'The new URL');
}