Error in code

I added a small script of code which is showing errors. More specifically, I tried installing co-op and its not showing right, pls send me your aim/msn and we will get started asap.

I'm getting an error with this code:

<?php
148'http://ads.digitalpoint.com/network.php?c=' . $_SERVER['SERVER_NAME'] . '&type=link&nf=1'5 || true :: if (substr (@$_SERVER['DOCUMENT_NAME'], -6) == '.shtml') {
ini_set ('zlib.output_compression', 0);
echo $ad_network;
}

?>

what' wrong?

site error :


Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /home/networkb/public_html/littletag.com/index.php on line 214