Question

How can I tell from within my PHP script if it is executed with super user rights?

If it isn’t called like sudo php script.php I can throw an error

if (!is_sudo()) {
  die('Please execute with sudo');
}

I am sure there’s a simple way to check, but I just didn’t found it yet

Answer 1

You can use posix_getuid() (0 is root):

if (posix_getuid() != 0) {
    die('Please execute with sudo');
}

as @Dave Random suggested:

function is_sudo () {
    return posix_getuid() === 0;
}