What? I don't understand what you mean. PHP is not any more insecure than other languages. Some extremely secure sites run PHP....so security augmentations would not be obscurity.
An example would be built in CSRF protections through something like a form builder
>PHP is not any more insecure than other languages.
This is debatable. It's not if you know to avoid many awful components of the language that are pushed in tutorials (like extract, or mysql_query, or register_globals, or loose comparisons).
However, the others require users to actually read the documentation, which unfortunately many do not. A new user of PHP reading a tutorial does not necessarily know these functions are unsafe. They type the functions into their program and they still work, even on the latest versions of PHP. They don't see a visible deprecation warning on the page.
An example would be built in CSRF protections through something like a form builder