function SetFilter($attribute, $values, $exclude = false)
{
assert(is_string($attribute));
assert(is_array($values));
assert(count($values));
if (is_array($values) && count($values)) {
foreach ($values as $value) {
assert(is_numeric($value));
}
$this->_filters[] = array("type" => SPH_FILTER_VALUES, "attr" => $attribute, "exclude" => $exclude, "values" => $values);
}
}