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<?php
/**
* @author Tassos.gr
* @link https://www.tassos.gr
* @copyright Copyright © 2023 Tassos All Rights Reserved
* @license GNU GPLv3 <http://www.gnu.org/licenses/gpl.html> or later
*/
namespace NRFramework\SmartTags;
use Joomla\Registry\Registry;
use Joomla\CMS\Filter\InputFilter;
defined('_JEXEC') or die('Restricted access');
class QueryString extends SmartTag
{
/**
* Returns the value of a URL query string parameter as found in the $_GET superglobal array. For example, if the page URL is http://example.com/page.php?key1=red&key2=blue, the {querystring.key2} Smart Tag will return blue.
*
* @param string $key
*
* @return string
*/
public function fetchValue($key)
{
$query = $this->factory->getURI()->getQuery(true);
if (empty($query))
{
return;
}
// Convert array keys to lowercase
$query = array_change_key_case($query);
// Convert array to registry object so we can access any level with dot notation.
$queryReg = new Registry($query);
return InputFilter::getInstance()->clean($queryReg->get(strtolower($key)));
}
}