balance.php

function bal(){
    $serversNew = array();
    $servers = array("host1", "host2", "host3", "host4");

    $query = "give me all the";

    $numServers = count($servers);

    while($numServers > 0) {
        $key = hexdec(substr(md5($numServers . '+' . $query),0,4))%($numServers);
        $keySet = array_keys($servers);
        $serverId = $keySet[$key];
        array_push($serversNew, $servers[$serverId]);
        unset($servers[$serverId]);
        --$numServers;
        print "serversNew: " . print_r($serversNew, true);
    }
}
bal();