Question

I have 2 arrays. The keys represent the player id in a game (and is the same in both arrays) and the value represents the Ping in one and the score in the other. What I am trying to do is get the Player ID (key) that has the highest ping and the lowest score. I can’t get my head around any of the sorts that would do this.

I don’t have to use 2 arrays, I just don’t know how else to do it.

Thanks.

Answer 1

LIVE Demo: http://codepad.org/46m3mHIH

Arranging this type of architecture would work better…

$players = array(
    array(
        "name" => "l337 H4x0r",
        "score" => 10432,
        "ping" => 0.35
    ),
    array(
        "name" => "El Kabooom",
        "score" => 19918,
        "ping" => 0.45
    ),
    array(
        "name" => "Kapop",
        "score" => 10432,
        "ping" => 0.38
    )
);

Then you could more efficiently sort your multi-dimensional array, and retrieve your $lowestScore and $highestPing values.

$playersScore = subval_sort($players,'score'); 
$lowestScore = $playersScore[0]['score'];

$playersPing = subval_sort($players,'ping'); 
$HighestPing = $playersPing[ count($players)-1 ]['score'];

function subval_sort($a,$subkey) {
    foreach($a as $k=>$v) {
        $b[$k] = strtolower($v[$subkey]);
    }
    asort($b);
    foreach($b as $key=>$val){
        $c[] = $a[$key];
    }
    return $c;
}