[assassingod]

The file has to be in PHP format (.PHP) also, if you arent using HTML in the file, you use

PHP Code:

echo("<a href=\"member.php?s=$session[sessionhash]&action=getinfo&userid=$userid\">$bbuserinfo[username]</a>"); 


If you are using HTML, use

PHP Code:

<?php
     echo("<a href=\"member.php?s=$session[sessionhash]&action=getinfo&userid=$userid\">$bbuserinfo[username]</a>");
?>