/**
* Check spamfilter pattern.
* @param mixed $pattern Pattern.
* @return string|boolean Returns safe pattern or boolean FALSE if any error
* occurred and set last error to appropriate error object.
*/
function spamfilter_check_pattern($pattern)
{
$pattern = DataExchange::escapeString($pattern);
if (strlen($pattern) > 256) {
kotoba_set_last_error(new SpamfilterPatternError());
return FALSE;
}
return $pattern;
}
