Knowledgebase search and multibyte characters

[jnet]

this is what I have in there. not sure what I should replace

// Sanitize the text
    if ($noparity)
    {
        $stopdata = array("#\s+#s", "#(\r\n|\r|\n)#s");
        $replacewith = array(" ", " ");
    } else {
        $stopdata = array("#\s+#s", "#(\r\n|\r|\n)#s", "/[^a-zA-Z0-9.@\-\_\s]/");
        $replacewith = array(" ", " ", "");
    }
    $_query = preg_replace($stopdata, $replacewith, $query);