I have the following select: <select name="ListaCliente" id="ListaCliente" title="$row_RSCliente ['CodCliente']"> <option value="4">ABA</option> <option value="1">CARLOS</option> <option value="3">LUIZ</option> <option value="2">SILVIO</option> </select>
and may and my post is this: $.post('teste.php', [$("#ListaCliente option:selected")], function(data){ $('#ResultEsq').show(); $('#AtriEsq').show(); $('#ResultEsq').empty().html(data); } ); }); but the destination is not enough any value: $_POST (array) undefined undefined for better understanding, I see that the files: http://www.4shared.com/file/108741536/64cd3f34/btest.html