<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>+ expand source</title> </head> <body> <h1>PHP Code Example</h1> <p><?php echo 'Hello World!'; ?></p> <p>This line is highlighted.</p> <div class="foobar"> This is an example of smart tabs. </div> <p><a href="http://wordpress.org/">WordPress</a></p> </body> </html>