Hello,

I think both statements should be work similar. There used to be some special cases regarding evaluation of function return values in if-statements, but this is not the case you are referring to below. I have not tested it if this is still the case. It was discussed e.g. here https://kamailio.org/mailman3/hyperkitty/list/sr-users@lists.kamailio.org/thread/ZBSKUC3K76DWETUVGHIC3QO235TCNCYH/

Cheers,

Henning

From: Joel Serrano via sr-users <sr-users@lists.kamailio.org>
Sent: Donnerstag, 12. Juni 2025 21:26
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Cc: Joel Serrano <joel@textplus.com>
Subject: [SR-Users] Re: Question about how $rc works

Hi All,

Just to add some context to my previous question: I'm trying to understand the difference between assigning the return value of a function to a variable directly vs assigning the “$rc” value to a variable after the function has run.

Rereading my initial email, I hope this makes my question clearer 🤣🤣

Thanks again,
Joel

On Wed, Jun 11, 2025 at 16:46 Joel Serrano <joel@textplus.com> wrote:

Hi All, 

I have a simple doubt: are these snippets the same?

One:

    secf_check_country($hdr(X-SRC-IP-CC));
    $var(secf_cc_rc) = $rc;

    if ($var(secf_cc_rc) == -2) {

    ...

Two:

    $var(secf_cc_rc) = secf_check_country($hdr(X-SRC-IP-CC));

    if ($var(secf_cc_rc) == -2) {

    ...

They both seem to work, the docs say to use option -one-.

In case they do the same, is there a reason I should pick one over the other? Or is this purely cosmetic?

Thanks, 

Joel.