UBB.Developers Forums Community Development Programming PHP and Server-side Scripting syntax question re: if .. && .. || ..

Probably pretty dumb, but ...

I use the check for admin/mod quite frequently -- i.e. if a=b and they aren't a mod or an admin, then do this. I have seen it in the threads scripts written like this:

if ( (a=b) && ( ($user['U_Status'] != 'Administrator') && ($user['U_Status'] != 'Moderator') ) ) {

that works

Now, I don't know if I also found this in the regular scripts or if tinkering I just ended up with it some time, but I've also used this:

if ( (a=b) && ($user['U_Status'] != 'Administrator' && $user['U_Status'] != 'Moderator') ) {

(difference in bold)

That works as well.

Is one incorrect and I'm just lucky it's working? Or are they both correct and it's a matter of preference?

They're equivalent. The following would also be equivalent:

if (a==b && $user['U_Status'] != 'Administrator' && $user['U_Status'] != 'Moderator') {

(I'm assuming that you meant to use "==" instead of "=".)

Here's the PHP Operator Precedence table. "==" and "!=" have higher precedence than "&&", so the parentheses aren't needed.

Rick is obsessed with using lots of parentheses (as well as quotes).

Yeah, I did mean "==" Thanks! I just wanted to make sure I wasn't screwing something up.

[]Rick is obsessed with using lots of parentheses (as well as quotes). [/]
so am I . I could never remember the operator precedence so I use parentheses which are safer...