function xmlSave($xmlfilename)
{
$dom = new domDocument();
/*
$complexe = $dom->appendChild(new DOMElement('complexe'));
$reel = $complexe->appendChild(new DOMElement('reel'));
$imag = $complexe->appendChild(new DOMElement('imag'));
$reel->nodeValue=1;
$imag->nodeValue=2;
*/
$complexe = $dom->CreateElement('complexe');
$dom->appendChild($complexe);
$reel = $dom->CreateElement('reel', 1);
$imag = $dom->CreateElement('imag', 2);
$complexe->appendChild($reel);
$complexe->appendChild($imag);
// ToDo sérialisation XML
print $dom->saveXML();
$dom->save($xmlfilename);
}
