Neviem si poradit s BBClone na stranke

S PHP len zacinam. Ako mam do kodu bbclone na stranke vlozit hodnotu

<?php echo $currentfolder ?>

tak aby sa mi nahradilo "nazov_stranky"

<?php
$page_name = "nazov_stranky";
define("_BBC_PAGE_NAME", "models $page_name");
define("_BBCLONE_DIR", "../monitor/");
define("COUNTER", _BBCLONE_DIR."mark_page.php");
if (is_readable(COUNTER)) include_once(COUNTER);

?>

Dakujem.