[kh99]

Lynne has a good point, but I thought I'd look at it anyway. Here's the code for a plugin using hook newthread_form_complete that changes the prefix dropdown to a hidden field if there's only one option and a prefix is required:

PHP Code:

if ($foruminfo['options'] & $vbulletin->bf_misc_forumoptions['prefixrequired'])
{
    if (preg_match_all('#<option value="([A-Za-z0-9_]+)"#', $prefix_options, $matches) == 1)
    {
        // one option, so disable prefix option dropdown and tack a 
        // hidden field on to the end of the $human_verify html
        $prefix_options = '';
        $human_verify .= "\r\n" . '<input type="hidden" name="prefixid" value="' . $matches[1][0] . '">';
    }
}