Add if rule in the plugin

[Zi5]

Hello ,
I just would like to know how i can put this if rule inside plugin ,
<if condition="$show['member']">
include a file for example
</if>

maybe you will tell me to use is rules , is the below right ?

if (is_member_of($vbulletin->userinfo, 1)) (The group of guests)
{
//return empty result
} else {
include
}

Thanks ,
Zi5

[Brandon_R]

if (is_member_of($vbulletin->userinfo, 1))
{
	\\Code here will run if the user is of usergroup guest
}
else
{
	\\Code here will run if the user if not of usergroup guest
}

[Zi5]

I already know this code , i had put it in my post , i hope you to re read my subject Brandon .
Thanks ,
Zi5

[Removed-836727]

For only members:

if ($show['member'])
{
....
}