ComboTree MultiCheck Problem

[MFS]

Hello.
Can anybody tell me how to get values from ComboTree multi in array like (1,2,3,4).
I can get this in javascript using:

Code:

var paramDrugi = $('#cboLookUp0000001').combobox('getValues');
alert(paramDrugi);

But I need it in php not in javascript.
When I use this:

Code:

$cboLookUp0000001 = $_POST['cboLookUp0000001'];

I recive

Code:

cboLookUp0000001[]:"1"
cboLookUp0000001[]:"2"
cboLookUp0000001[]:"3"
cboLookUp0000001[]:"4"

I need this in this format: cboLookUp0000001[]:"1,2,3,4"
Any solution??

[MFS]

I found solution.
Only use: multivalue="false"

Code:

<input id="cboLookUp0000001" class="easyui-combobox textbox" name="cboLookUp0000001" style="width:630px;" multiple="multiple" multivalue="false" data-options="valueField:'Sifra',textField:'Naziv',url:'SOdgovorTemplateLookup.php?SOdgovorTemplate=2'"  value="" editable="false">