How To Make Attachments Required ...?

[fai99al99]

How Can I Make A specific Attachments Images Formats like "png,jpg...etc" Required! Using :

PHP Code:

 if($type=='thread' AND in_array($foruminfo['forumid'], array(1,2,3,4,5)))
{

$attachs = $vbulletin->db->query_read("SELECT attachmentid
FROM " . TABLE_PREFIX . "attachment 
WHERE posthash = '" . $vbulletin->db->escape_string($post['posthash']) . "'
AND userid = " . $vbulletin->userinfo['userid'] . "
ORDER BY attachmentid");


if($vbulletin->db->num_rows($attachs) <= 0)
$errors[] = $vbphrase['required_attachments'];
}