Issues with some "complex" mix of php, html and heredoc

[Khaoz]

I got the attached example from the add.html here

 http://toys.lerdorf.com/archives/38-The-no-framework-PHP-MVC-framework.html.

Trying to use tab to indent line by line or use indent-region to reformat the entire buffer results in a error:

mumamo-do-fontify-2: mumamo-do-fontify m=php-mode, s/e=1042/1378 syn-min/max=1042/1447: Wrong type argument: syntax-table-p, nilf