php - saving domdocument with $VAR$ as form action -


as title suggests, trying save domdocument. domdocument has action, value $var$ however, upon saving of domdocument $ dollar signs escaped. how can prevent being escaped? regards, michel edit code:

    $xpath = new domxpath($doc);         $body = $xpath->query('//body')->item(0);     $form = $doc->createelement('form');     $form->setattribute('action', '$portal_action$');     $form->setattribute('method', 'post');     $p = $doc->createelement('p');     $p->setattribute('style','text-align:center;');     $b = $doc->createtextnode('wifi code:');     $p->appendchild($b);     $inputvoucher = $doc->createelement('input');     $inputvoucher->setattribute('name', 'auth_voucher');     $inputvoucher->setattribute('type', 'text');     $p->appendchild($inputvoucher);     $inputredirurl = $doc->createelement('input');     $inputredirurl->setattribute('name', 'redirurl');     $inputredirurl->setattribute('type', 'hidden');     $inputredirurl->setattribute('value', '$portal_redirurl$');     $p->appendchild($inputredirurl);     $inputsubmit =  $doc->createelement('input');     $inputsubmit->setattribute('type','submit');     $inputsubmit->setattribute('name', 'accept');     $inputsubmit->setattribute('value', 'continue');     $p->appendchild($inputsubmit);     $form->appendchild($p);     $body->appendchild($form);     return urldecode($doc->savehtml());


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