HERE Documents can reference arrays as long as you enclose
the vars in {}.
Like this:
<?php
$line = array( 'title' => "Hello", 'date' => 'Today');
echo <<<EOT
Title: {$line['title']}
Date: {$line['date']}
EOT;
?>
Run this and get
Title: Hello
Date: Today
More info here, scroll down to "heredoc syntax":
http://www.php.net/manual/en/language.types.string.php
parse_str