function updateStyles($mapfile, $layerName, $data)
{
$map = new mapObj($mapfile);
$layer = $map->getLayerByName($layerName);
deleteAllStylesForClassesOfLayer($layer);
foreach ($data as $value) {
for ($i = 0; $i < $layer->numclasses; $i++) {
$class = $layer->getClass($i);
if ($value->className == $class->name) {
$newStyle = new styleObj($class);
$newStyle->size = $value->size;
$newStyle->width = $value->width;
if ($value->symbol != "") {
$newStyle->symbolname = $value->symbol;
}
if ($value->outlinecolor != "") {
$outlinecolor = hex2rgb($value->outlinecolor);
$newStyle->outlinecolor->setRGB($outlinecolor[0], $outlinecolor[1], $outlinecolor[2]);
}
if ($value->color != "") {
$color = hex2rgb($value->color);
$newStyle->color->setRGB($color[0], $color[1], $color[2]);
}
if ($value->angle != "") {
$newStyle->angle = $value->angle;
}
if ($value->pattern != "") {
$newStyle->updateFromString("PATTERN " . $value->pattern . " END");
}
if ($value->gap != "") {
$newStyle->gap = $value->gap;
}
if ($value->initialgap != "") {
$newStyle->initialgap = $value->initialgap;
}
}
}
}
$map->save($mapfile);
}