<?php
$priority = array(4, 6, 10, 90);
$values = array("1vi", "2ri", "3ti", "...");
$sum = 1;
$count = count($priority);
$num = rand(1, array_sum($priority));
for ($i = 0; $i < $count; $i++) {
if ($sum <= $num && $num < $sum + $priority[$i]) {
break;
}
$sum += $priority[$i];
}
echo "el: ".$values[$i]."\n";
?>