Random() con posibilidad

[HackmanC]

Hola,

Código PHP:

$weights = array(
     2 => 10,
     4 => 10,
    12 => 10,
    24 => 30,
);
$totalWeight = array_sum($weights);
 
function normalize($n) {
    global $weights;
    $s = 0;
    foreach ($weights as $key => $value) {
        $s += $value;
        if ($s >= $n) return $key;
    }
    return false;
}
 
function randomizer() {
    global $totalWeight;
    $i = floor(mt_rand(0, $totalWeight));
    return normalize($i);
}
 
echo "select * from objects where id = " . randomizer();
 

En $weights tienes un array asociativo con el peso de cada id.

Saludos,

ps:
http://www.forosdelweb.com/f13/bajar...ricion-750353/