How can I make more that one error page?

[JamesAB]

I'm currently looking at attachment.php and trying to give users different error messages based on the extension of the file they are downloading.

Here's the original:

PHP Code:

    if (!($forumperms & $vbulletin->bf_ugp_forumpermissions['canview']) OR !($forumperms & $vbulletin->bf_ugp_forumpermissions['canviewthreads']) OR !($forumperms & $vbulletin->bf_ugp_forumpermissions['cangetattachment'])  OR (!($forumperms & $vbulletin->bf_ugp_forumpermissions['canviewothers']) AND ($attachmentinfo['postuserid'] != $vbulletin->userinfo['userid'] OR $vbulletin->userinfo['userid'] == 0)))
    {
         print_no_permission();
    } 


Now instead of calling print_no_permission(); first, I would like to give a customized error message.

I'd like to do something like this:

PHP Code:

    if (!($forumperms & $vbulletin->bf_ugp_forumpermissions['canview']) OR !($forumperms & $vbulletin->bf_ugp_forumpermissions['canviewthreads']) OR !($forumperms & $vbulletin->bf_ugp_forumpermissions['cangetattachment'])  OR (!($forumperms & $vbulletin->bf_ugp_forumpermissions['canviewothers']) AND ($attachmentinfo['postuserid'] != $vbulletin->userinfo['userid'] OR $vbulletin->userinfo['userid'] == 0)))
    {
        if (in_array($extension, array('wmv', 'asx', 'asf', 'mpg', 'mpeg', 'mov', 'flv', '3gp', 'avi', 'zip')))
        {
            DO SOMETHING;
        }
        else
        {
            print_no_permission();
        }
    } 


What do you suggest I use instead of print_no_permission();?

Thanks for your help.

--------------- Added at 05:05 ---------------

Okay. I did some searching and I think I solved it myself by adding a phrase called "my_no_permisission_videos" in the "Front-End Error Messages" section.

The new code looks like this:

PHP Code:

    if (!($forumperms & $vbulletin->bf_ugp_forumpermissions['canview']) OR !($forumperms & $vbulletin->bf_ugp_forumpermissions['canviewthreads']) OR !($forumperms & $vbulletin->bf_ugp_forumpermissions['cangetattachment'])  OR (!($forumperms & $vbulletin->bf_ugp_forumpermissions['canviewothers']) AND ($attachmentinfo['postuserid'] != $vbulletin->userinfo['userid'] OR $vbulletin->userinfo['userid'] == 0)))
    {
        if (in_array($extension, array('wmv', 'asx', 'asf', 'mpg', 'mpeg', 'mov', 'flv', '3gp', 'avi')))
        {
            eval(standard_error(fetch_error('my_no_permisission_videos')));
        }
        else
        {
            print_no_permission();
        }
    } 


Is this the best solution?