how to "export" a variable to template?

[sandman1970]

hi,

generally i need answer for the question in the title

here is my problem:

in file showthread.php i set up a variable $threadBelongsToForumA. I dont know how to "export" this varialbe in order i can use "if conditional" syntax in SHOWTHREAD template:

<if condition="$threadBelongsToForumA==1">....</if>

my php and VB know-how is very limited, pls help. Thx a lot.