Old solution

<?php
require("modprot");
class KPO
{
        public $moduleID = -1;
        protected $kpo = array();

        public function OnBotCommand($uid, $source, $command, $params)
        {
                switch ($command)
                {
                        case "kpo":
                        $chose=array('ko', 'papir', 'ollo');
                        $beats=array('ollo' => 'papir', 'papir' => 'ko', 'ko' => 'ollo');
                        if (!in_array($params, $chose)):
                                privmsg ($source, "Használat: !kpo ko|papir|ollo");
                                break;
                        endif;
                        $my = $chose[rand(0,count($chose)-1)];
                        $your = $params;
                        if (empty($this->kpo[$uid])):
                                $this->kpo[$uid]['Beats'] = 0;
                                $this->kpo[$uid]['Wins'] = 0;
                        endif;
                        if ($beats[$my] == $your):
                                $this->kpo[$uid]['Beats'] = $this->kpo[$uid]['Beats'] + 1;
                                privmsg ($source, User($uid)->Nick.": ".$your." ".User(-2)->Nick.": ".$my." - NYERTEM! (".User($uid)->Nick.": ".$this->kpo[$uid]['Wins']." győzelem, ".$this->kpo[$uid]['Beats']." vereség)");
                                break;
                        endif;
                        if ($beats[$your] == $my):
                                        $this->kpo[$uid]['Wins'] = $this->kpo[$uid]['Wins'] + 1;
                                        privmsg ($source, User($uid)->Nick.": ".$your." ".User(-2)->Nick.": ".$my." - NYERTÉL! (".User($uid)->Nick.": ".$this->kpo[$uid]['Wins']." győzelem, ".$this->kpo[$uid]['Beats']." vereség)");
                                        break;
                        endif;
                        if ($your == $my):
                                        privmsg ($source, User($uid)->Nick.": ".$your." ".User(-2)->Nick.": ".$my." - döntetlen. (".User($uid)->Nick.": ".$this->kpo[$uid]['Wins']." győzelem, ".$this->kpo[$uid]['Beats']." vereség)");
                                        break;
                        endif;
                        break;
                 }
        }
}
$newmod = new KPO();

$cmds = array('!kpo');
?>

New solution
<?php

class KPO2
{
        public $moduleID = -1;

        public function cmd_kpo($uid, $source, $params)
        {
                if (KPO::$INVALID_WEAPON == ($weapIDPlayer = KPO::WeaponID($params)))
                        return privmsg($source, User($uid)->Nick.": tiltott fegyver!");
                $weapIDBot = KPO::RandomWeapon();

                $msg = User($uid)->Nick.": " . KPO::WeaponName($weapIDPlayer);
                $msg .= " ".User(-2)->Nick.": " . KPO::WeaponName($weapIDBot);
                $msg .= " - ";
                if ($weapIDBot == $weapIDPlayer)
                {
                        UserStore::Call('IncEntry', $uid, 'kpo/games/tie');
                        $msg .= "döntetlen.";
                }
                else
                {
                        if (KPO::IsBeat($weapIDPlayer, $weapIDBot))
                        {
                                $msg .= "NYERTÉL!";
                                UserStore::Call("IncEntry", $uid, "kpo/games/win");
                        }
                        else
                        {
                                $msg .= "NYERTEM!";
                                UserStore::Call('IncEntry', $uid, "kpo/games/lose");
                        }
                }
                $msg .= " (" . User($uid)->Nick . ": " . UserStore::Call('GetEntry', $uid, 'kpo/games/win', 0) . " győzelem, " . UserStore::Call('GetEntry', $uid, 'kpo/games/lose', 0) . " vereség)";
                privmsg($source, $msg);
        }
        public function usage_kpo()
        {
                return [ 'desc' => 'Kő-Papír-Olló játék',
                        'usage' => [['fegyvernem' => true]]
                ];
        }
}

class KPO
{
        public static $INVALID_WEAPON = -1;

        public static function IsBeat($Attacker, $Victim)
        {
                return self::$Weapons[$Attacker]['beats'] == $Victim;
        }

        public static function WeaponName($WeaponID)
        {
                return self::$Weapons[$WeaponID]['name'];
        }

        public static function WeaponID($WeaponName)
        {
                $WeaponName = mb_strtolower($WeaponName);
                foreach (self::$Weapons as $WeaponID => $WeaponData)
                {
                        if (in_array($WeaponName, $WeaponData['aliases']))
                                return $WeaponID;
                }
                return self::$INVALID_WEAPON;
        }

        public static function RandomWeapon()
        {
                return Veletlenszam(0, count(self::$Weapons)-1);
        }

        public static $Weapons = [
                0 => [
                        'name' => 'kő',
                        'aliases' => ['ko', 'kö', 'kô', 'kő', 'kavics', 'szikla', 'rock', 'stone'],
                        'beats' => 2
                ],
                1 => [
                        'name' => 'papír',
                        'aliases' => ['papir', 'papír', 'papirusz', 'papirusztekercs', 'lap', 'újság', 'könyv', 'konyv', 'ujsag', 'tekercs', 'pergamen', 'irat', 'iromány', 'iromany', 'paper', 'sheet'],
                        'beats' => 0
                ],
                2 => [
                        'name' => 'olló',
                        'aliases' => ['ollo', 'olló', 'kés', 'kes', 'scissors', 'vago', 'vágó', 'penge', 'él', 'el', 'blade', 'cut'],
                        'beats' => 1
                ]
        ];
}

$newmod = new KPO2;
?>