[Jon]

K, great, that was confusing for me

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The code syntax:

<?=

is equivalent to

<? echo

so you'd have to use:

<?php echo number_format($MINICART["total_cost"], 2, '.', ','); ?>

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I pulled the mini-cart information from include/minicart.php and then added some additional code to pull additional info, removed all the smarty references and instead echo'd the information directly.