The cleanest looking multiple "if" scenario is to use a "Switch" statement.
Unfortunately I don't believe PHP's "switch" will do varied conditions, only equality
statements:
$j = 5;
switch ($j) {
case "< 6":
echo "first";
break;
case <6:
echo "second";
break;
case 5:
echo "third";
break;
default:
echo "fourth";
break;
}
This breaks at "case <6". Removing the second condition, the switch statement echos
"third" since $j == 5.
In some other languages, you could put your range of values in the "case" statements,
but not PHP I guess.
I think in this case, you're stuck with a bunch of if/elseif statements. Only 16 of
them though, right? :)
-TG
> -----Original Message-----
> From: René Fournier [mailto:[EMAIL PROTECTED]
> Sent: Friday, July 16, 2004 6:20 PM
> To: php
> Subject: [PHP] convert degrees to heading
>
>
> I have to write a little function to convert a direction from degrees
> to a compass -type heading. 0 = West. 90 = North. E.g.:
>
> from:
> 135 degrees
>
> to:
> NW
>
> Now, I was planning to write a series of if statements to
> evaluate e.g.,
>
> if ($heading_degrees < 112.5 && $heading_degrees > 67.5) {
> $heading_compass = "N";
> }
>
> The works, but it will require
>
> N, NNW, NNE, NE, NW, ENE, NWW... many IF statements.
>
> Can anyone think of a programatically more elegant and
> efficient way of
> converting this type of data? (I suppose this is not really a
> problem,
> just a curiosity.)
>
> ...Rene
>
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