Posted by lallous on 10/11/05 12:03

Hello

Check the manual for: "ternary operator"

In short:

C = cond ? A : B

as if:

if (cond) C = A else C = B

Regards,
Elias
"Michael Jack" <michael@jack2005.com> wrote in message
news:difude$ksh$1@domitilla.aioe.org...
> In the program below, what is the meaning/use of
> the question mark (?gcd) and the colon (:$a) after the return statement?
> Any
> explanation will be appreciated.
>
> <?
> $x=32;
> $y=80;
> function gcd($a, $b)
> { return ($b>0)?gcd($b,$a%$b):$a;}
> $val=gcd($x, $y);
> print "The greatest common denominator of $x and $y is $val";
> ?>
>
> This recursive program is used to find the greatest common denominator of
> 2
> numbers.
>
> TIA
>
>

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