Can we use PHP instead?

I wanted to be able to use conditional statements using tokens, so I needed to use PHP on the fields in the administration section.

I have changed the text fields to textareas in /admin/content/page_title

Then i changed:
from
$title = token_replace_multiple($title, $types);
to
$title = php_filter('process', 0, -1, token_replace_multiple($title, $types));

in page_title.module...

And now I can handle conditional page titles.

Are there any security issues with this approach, if yes, please explain, if no, can it be included in the next commit. Or any other better approaches are welcome.

Thanks in advance.