[Resolved] Looking for suggestions on how to do this...

Napster

Ok, I am making a PHP script and in the script there is 4 variables, lets called them $r, $h, $g, and $s. Now each of these variables will be a number like

$r = 3
$s = 3
$g = 1
$h = 0

Now I am trying to find a quick way of comparing the variables where it selects the largest variable. If two or more of the variables are the same, then the script would randomly pick one.

I could do this in a very long way using if statements to compare each variable to others then using about 2094729423 more if statements to find out which ones are the highest and equal if there are any but I do not want to do that so I am wondering is there a way to find the largest variable and if two are the same and the highest then the script randomly selects one. If there is, how do I go about and doing it?

planetsim

[man]max[/man] It wont tell you the variable name, however it will give you the max number.

Napster

Hmm, that can help a bit, but is there is a function that will check if any of the variables are the same.

Napster

Would this work??


$r = 3;
$g = 3;
$s = 0;
$h = 1;

$max = max($r, $s, $g, $h); // 3

$numbers = array(r=>$r, s=>$s, g=>$g, h=>$h);

$high = array();

foreach ($numbers as $j => $key) {

  if ($max == $key) {

array_push($high, $j);

  }

}

$randkey = array_rand($high, 1);


$h = $high[$randkey[0]];

echo "\$" . $h . " is the variable you want.";

Napster

Hmm...

This works, so I solved my problem ::


<?php

$r = 3;
$g = 3;
$s = 0;
$h = 1;

$max = max($r, $s, $g, $h); // 3

$numbers = array("r"=>$r, "s"=>$s, "g"=>$g, "h"=>$h);

$high = array();

foreach ($numbers as $j => $key) {

  if ($max == $key) {

array_push($high, $j);

  }

}

$randkey = array_rand($high, 1);

$h = $high[$randkey];

echo "\$" . $h . " is the variable you want.";

?>

Weedpacket

If that's what you're after, then you could probably cut down a fair bit of work by noting that (a) [man]max[/man] can take an entire array as its argument, and (b), the [man]array_keys[/man] function can take a search value. (And you might want to use an array consistently if these variables are to be used together like this for much else.)