comparison

[Anon]

I am trying to make it that if one variable doesn't equal either of three other variables, then it says "error" or something, here is wot i've got, but it dont work

if ($variable != $comp1 OR $comp2 OR $comp3) {

php code

}

Why doesn't that work? And the other thing that bothers me, is that is a really simple thing that should work, but i cant work it out! 🙁

[flipis]

PHP Comparison operators:

AND &&
OR ||
NOT EQUAL !=
EQUAL ==

if ($variable != $comp1 OR $comp2 OR $comp3) {
}

becomes this

if($variable != $comp1 || $variable != $comp2 || $variable != $comp3){
}

So don't use OR or AND, like in SQL or BASIC. Use && and ||.

Hope it helps

fLIPIS

[fitzbean]

try:

if (($variable <> $comp1) && ($v1 <> $comp2) && ($v1 <> $comp3)) { echo "No matches"; }

[fitzbean]

opps i used && by mistake:

if (($variable != $comp1) || ($variable1 != $comp2) || ($variable1 != $comp3))

[flipis]

yeah, use parenthesis. Will make it clearer for you.

[Anon]

thanks you two, i think my old days of qbasic were coming through....

[[deleted]]

"So don't use OR or AND"

OR and AND are prefectly acceptable, you just have to remember which order they are executed in. && is executed before AND, and || before OR. That is the only difference.

If you're not 100% sure which operator PHP will do first, then just put parentheses around the parts that you want PHP to treat as a whole.

[fitzbean]

hehe i loved Qbasic back in the day 😉

[flipis]

10 print "QBasic used to be good"
20 goto 10

hehehehehehehe

LOL!!!!

fLIPIS

Oh, i began with GwBasic, from MS DOS 3.11