[mapguide-users] Get selected layers from server side

[Jim O'Leary]

Is it possible to get a list of the map's selected layers from the server
side? 

I know I can get this by making an MgSelection and passing the selection XML
from the client to the server program, like:

$selection = new MgSelection($map,$_REQUEST['selectionXML']);

However, I don't want to pass a big selection XML string to the server
program, as I am passing by GET and the selection XML could be greater than
the browser handles. 

If I make the selection object without including the selection XML, like

$selection = new MgSelection($map);
$selectedLayers = $selection->GetLayers();
$numberLayers = $selectedLayers->GetCount();

PHP tells me that $selectedLayers is not an object.

Thanks.


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