PHP Lottery Ticket winner picker

Question

I am about to create a script that choose a winner for my lottery. The amount of tickets is chosen by following: amount of money * 100 So $1.26 = 126 tickets.

I made this, which give me the winning ticket number, but then I cannot get the winning user:

$totaltickets = 0;

foreach($players as $player){

    $totaltickets += $player->depositedValue*100;
}

$winningTicket = rand(1,$totaltickets);

I have rows like this:

Player1 - 1.25$
Player2 - 5.99$
etc..

If it is possible then I would like to keep it like this, and not have 1000s of rows in the database with each ticket.

Answer 1

You can use this code:

<?php

    function getWinnerPlayer($players) {
        /* get total amount of tickets */
        $total_tickets = 0;
        foreach ($players as $player) {
            /* var_dump($player->depositedValue); */
            $total_tickets += $player->depositedValue * 100;
        }

        /* get winner ticket */
        $winner = rand(1, $total_tickets);

        /* return winner player */
        $count = 0;
        foreach ($players as $player) {
            // $total_tickets is not the correct variable, sorry
            // $count += $total_tickets->depositedValue * 100;
            $count += $player->depositedValue * 100;
            if ($count >= $winner) return $player;
        }
    }

?>

Answer 2

I'm thinking of keeping your idea of numbers instead of bring in an array.

I'm going to have the players hold their ticket positions (start/end). When I pick a random ticket, I'm going to see if my number is within their bounds, and if it is, then I have found the winner.

<?php

class TicketMaster {
    private $players = array();
    public $total = 0;

    public function addPlayer($player) {
        $player->tickets[0] = $this->total;
        $this->total += $player->value;
        $player->tickets[1] = $this->total;
        $this->players[] = $player;
    }

    public function selectWinner() {
        $ticket = rand(0, $this->total);

        foreach ($this->players as $player)
            if ($ticket >= $player->tickets[0] && $ticket <= $player->tickets[1])
                return $player;
        return false;
    }
}

class Player {
    public $name = '';
    public $value = 0;
    public $tickets = array(0, 0);

    function __construct($name, $value) {
        $this->name = $name;
        $this->value = $value;
    }
}

$ticketMaster = new TicketMaster();

$ticketMaster->addPlayer(new Player("John", 200));
$ticketMaster->addPlayer(new Player("Mike", 200));
$ticketMaster->addPlayer(new Player("Dave", 1000));

echo $ticketMaster->selectWinner()->name;

Also

$ticket = rand(0, $this->total); //change to random_int, but I kept it at rand because eval.in only works with this one

Output: Dave

Dave wins most of the time because he has like 1000 tickets, over the other two players who only have 400 combined.