Why is www's $PATH only /usr/bin:/bin?

[Niklaas Baudet von Gersdorff]

Hi,

I figured that www's $PATH is only /usr/bin:/bin. Why is that if
/etc/login.conf says the following?

    default:\
    --------8<--------
        :path=/sbin /bin /usr/sbin /usr/bin /usr/games /usr/local/sbin /usr/local/bin ~/bin:\
    --------8<--------

/etc/passwd looks like this.

    www:*:80:80:World Wide Web Owner:/nonexistent:/usr/sbin/nologin
    
So, I left everything the default.

The thing is that I want to run something in /usr/local/bin with PHP's

    shell_exec($cmd);

but that's not working because it's not in $PATH.

Any hint is very much appreciated.

    Niklaas