Thats one PHP-5.2.x feature for Phorum-5.2 I’d like to use …
Its the httpOnly Cookies support in the setcookie-call.
Now that Firefox 22.214.171.124 supports it too (as mentioned here and here)
the main browsers are supporting it.
Internet Explorer seems to have been the first one supporting it, with Firefox now and Opera meant to support it in 9.5.
Therefore it makes sense to use it now. Even browsers not supporting it are just ignoring the additional flag.
In PHP that flag was introduced in PHP-5.2 – another cause for going php-5.2 and up only ;).