Description:
------------
in my menu generation code (not this script, but similar, php acts differently. instead of generating an error (it should not), it fails silently and appends the following PHP source code into the string in addition to the string content itself, up to a certain point.

the HTML output from PHP from the pastebin code ends up being
http://pastebin.com/78Mx80V2
$s .= printbreadcrumbsmenu($xmlArray, $filepath, /*array('LI','USER','USERS','VISITOR','VISITORS'), */true);
            $s .= printbreadcrumbsmenu($xmlArray, $filepath, /*array('MODERATOR','MODERATORS'), */false);
            $s .= printbreadcrumbsmenu($xmlArray, $filepath, /*array('ADMIN','ADMINS','ADMINISTRATOR','ADMINISTRATORS'), */false);
            $s .= printbreadcrumbsmenu($xmlArray, $filepath, /*array('LEADERSHIP','LEADERS','LEADER'), */false);
 
            $s .= "    </div>\n";
            $s .= <<<'EOT'

and

            EOT;
            if ((bool)$isxhtml) {
                $s .= $menuhelptextx;
            } else {
                $s .= $menuhelptext;
            }
            $s .= <<<'EOT'

should not be there in the generated HTML source, those are php functions. it seems like php is ignoring the EOT;


Test script:
---------------
<?php
$s="";
$s.= <<<'EOT'
this is <html lang='en'>
<title>a title</title>
  EOT;
echo $s;
?>

http://pastebin.com/fE5CaVEE for the one mentioned in Description.

Expected result:
----------------
should follow the manual in how it works. should not work just for initialization only but for concatenation, and echo as well, any place where you can use a string.
expected HTML output: http://pastebin.com/SYQ4GSWG

Actual result:
--------------
EOT; ignored and therefore php source code is included into the string including the EOT; (until when?)