XML connection with hotel chain

[chorbasr]

I am implementing an XML integration and need help.This is code I'm using (php):\[code\]<?php //XML Request $xml = "codigousu=" . HOTUSA_CODIGOUSU; $xml .= "&clausu=" . HOTUSA_CLAUSU; $xml .= "&afiliacio=" . HOTUSA_AFILIACION; $xml .= "&secacc=" . HOTUSA_SECACC; $xml .= "&xml="; $xml2 = "<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n"; $xml2 .= "<peticion>\n"; $xml2 .= "<tipo>7</tipo>\n"; $xml2 .= "<nombre>Petici