Using phpinclude_start

[paulyy]

It doesn't seem to want to accept to following code;

if (THIS_SCRIPT == 'index') {
     $page_menu = '<if condition="$bbuserinfo['userid']">it works<else />login</if>'; }

But if I just use;

if (THIS_SCRIPT == 'index') {
     $page_menu = 'it works'; }

It will. So I assume it's the fact I'm trying to use an if condition in the wrong place. So, what would I need to do to get the top piece of code to work effectively?