HEREDOC: a great way to build long strings

The PHP HEREDOC feature: a great way to build long strings, such as when You're writing PHP code to spit out HTML.  For example:

Hideous old method:

$my_string = "".
"<table>\n" .
"    <tr>\n".
"        <td>What's for lunch?</td>\n".
"    </tr>\n".
"</table>\n";

echo $my_string;

Magnificent Heredoc method:

$my_string = <<<COOLSTUFF
<table>
    <tr>
        <td>What's for lunch?</td>
    </tr>
</table>
COOLSTUFF;

echo $my_string;

see: http://www.tizag.com/phpT/strings.php

Note that the Heredoc syntax is rather unforgiving.  That terminating "COOLSTUFF" line must be NON-indented, and You can't even have spaces or tabs after it on the same line, or it won't work.  But if You treat it nice, it will treat You nice.