PHP in PHP code? If that makes sense..

Hello.. I am trying to add PHP in PHP.. If this makes sense..

Here is the example of what I want. I put in CAPS what <?php echo the_content(); ?> should be..

<?php echo do_shortcode('[shortcode]<table width="660" height="200" border="0"><tr><td>PHP THE_CONTENT HERE</td></tr></table>[/shortcode]'); ?>