gistfile1.php

function copy_row($fromid, $overwride = array()) {
  $fom = $this->db->getTable('table')->find($fromid);
  $to = $this->db->getTable('table')->create();
  $to->fromArray(array_merge($overwride, $from->toArray()));
  $to->save();
}


$new_row = copy_row(1, array('id' => null));