You can send variables:
$id = $_REQUEST["id"];
$('.edit_text').editable('upd_seg.php', {
type : 'textarea',
submit : 'OK',
submitdata : {id: '<?=$id_seg?>', values: '<?=$col_value?>'}
tooltip : 'Click to edit...'
});
And obtain the variables on updt_seg.php
<?
$sql_update_seg = "UPDATE table_seg set inf=".$_REQUEST['values']." where id=".$_REQUEST["id"];
echo "<script>alert('".$sql_update_seg."')</script>";
?>