Geomtransform is not set using PHP Mapscript

[edmarmoretti]

After applying geotransform and save the mapfile geotransform disappears. Example

$mapa = ms_newMapObj($arquivo);

$layer = $mapa->getlayerByname($name);

$classe = $layer->getclass(0);

$estilo = $classe->getstyle(0);

$s = "STYLE geomtransform bbox END";

$estilo->updateFromString($s);

echo $estilo->getGeomTransform(); //return bbox

$mapa->save($arquivo);

$mapa = ms_newMapObj($arquivo);

$layer = $mapa->getlayerByname($name);

$classe = $layer->getclass(0);

$estilo = $classe->getstyle(0);

echo $estilo->getGeomTransform(); //return ""