Extensions.php

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<?php

namespace SAML2\XML\samlp;

use SAML2\Constants;
use SAML2\Utils;
use SAML2\XML\Chunk;

class Extensions
{
    public static function getList(\DOMElement $parent)
    {
        $ret = array();
        foreach (Utils::xpQuery($parent, './saml_protocol:Extensions/*') as $node) {
            $ret[] = new Chunk($node);
        }

        return $ret;
    }

    public static function addList(\DOMElement $parent, array $extensions)
    {
        if (empty($extensions)) {
            return;
        }

        $extElement = $parent->ownerDocument->createElementNS(Constants::NS_SAMLP, 'samlp:Extensions');
        $parent->appendChild($extElement);

        foreach ($extensions as $ext) {
            $ext->toXML($extElement);
        }
    }
}