Is It Possible To Assign A Whole Function Or Block To A Variable ???

Is it possible to assign a whole function or block to a variable ???

eg.
<BLOCKQUOTE><font size="1" face="Verdana,Arial,Helvetica">code:</font><HR><pre>
<? if (db_num_rows($qid_p) == 0) { ?>
<li>No
<? } ?>
<? while ($prod = db_fetch_object($qid_p)) { ?>
<p><b><a href="product_details.php?id=<?=$prod->id?>"><? pv($prod->name) ?></a></b>
<br><? pv($prod->description) ?>
<br>$<? pv($prod->price) ?>
<br>[<a href="cart_add.php?id=<?=$prod->id?>">+ Add to Cart</a>]
<? } ?>

How to assign this code to a unique variable ???

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