PHP lottery lottery selection

Question

I am going to create a script that selects a winner for my lottery. The number of tickets is selected as follows: amount of money * 100 So $ 1.26 = 126 tickets.

I did this to give me a winning ticket number, but then I cannot get a winning user:

 $totaltickets = 0; foreach($players as $player){ $totaltickets += $player->depositedValue*100; } $winningTicket = rand(1,$totaltickets); 

I have lines like this:

 Player1 - 1.25$ Player2 - 5.99$ etc.. 

If possible, I would like to save it that way and not have 1000 rows in the database with each ticket.

Answer 1

I am going to keep your idea of ​​numbers instead of casting an array.

I intend for the players to keep their positions on the tickets (start / end). When I choose a random ticket, I will see if my number is within their borders, and if so, I found a 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; 

Besides

 $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 1000 tickets, the other two players only 400.

Answer 2

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 3

- no php required, just mysql. In this example, in this example, there are no crazy ordinary numbers.

 create table rg ( -- RaffleGuy guyId int auto_increment primary key, fullName varchar(100) not null, cellPhone varchar(20) not null, ticketCount int not null, winLow int null, winHigh int null ); -- trucate table rg; -- for testing next time insert rg (fullName,cellPhone,ticketCount) values ('johnny two thumbs','11111',126); insert rg (fullName,cellPhone,ticketCount) values ('kim','153111',500); insert rg (fullName,cellPhone,ticketCount) values ('Lady with Hat','113211',1); insert rg (fullName,cellPhone,ticketCount) values ('Guy with Nose','14454111',900); insert rg (fullName,cellPhone,ticketCount) values ('Kipper','2211111',100); insert rg (fullName,cellPhone,ticketCount) values ('Jipper','222888',400); insert rg (fullName,cellPhone,ticketCount) values ('smith family','534511111',500); insert rg (fullName,cellPhone,ticketCount) values ('First Pentacostal Church','3153111',200); insert rg (fullName,cellPhone,ticketCount) values ('Lady with Hat','1132141',123); insert rg (fullName,cellPhone,ticketCount) values ('Guy with Nose','14441311',500); insert rg (fullName,cellPhone,ticketCount) values ('Kipper','2211711',300); insert rg (fullName,cellPhone,ticketCount) values ('Jipper','2272',200); update rg join (select rg.guyId,(select ifnull(sum(ticketCount)+1,1) from rg r2 where r2.guyId<rg.guyId) below from rg) nnn on nnn.guyId=rg.guyId set winLow=nnn.below,winHigh=nnn.below+ticketCount-1 select * from rg; # fullName cell# tix wLow wHigh 1 johnny two thumbs 11111 126 1 126 2 kim 153111 500 127 626 3 Lady with Hat 113211 1 627 627 4 Guy with Nose 14454111 900 628 1527 5 Kipper 2211111 100 1528 1627 6 Jipper 222888 400 1628 2027 7 smith family 534511111 500 2028 2527 8 First Pentacostal Church 3153111 200 2528 2727 9 Lady with Hat 1132141 123 2728 2850 10 Guy with Nose 14441311 500 2851 3350 11 Kipper 2211711 300 3351 3650 12 Jipper 2272 200 3651 3850 select sum(ticketCount) into @tottix from rg; -- 3850 -- seed your random number, I leave that to you select rand(unix_timestamp()); -- example select floor(rand()*@tottix)+1 into @thernd; -- 531 select * from rg where winLow< =@thernd and winHigh> =@thernd ; 2 kim 153111 500 127 626 Kim wins, call her 

Answer 4

Here is the pseudo-code that will randomly draw a lottery and determine the winner. The best approach in this case with multiple numbers, since you are using foreach, is to use arrays. So in the code below

 <?php //Array that holds the players $players[] =0; //Run this loop from 0 until how many tickets were issued for($i=0; $i<100; $i++){ $players[$i] = $i * 100; } //Choosing the randomly winning ticket $winningTicket = array_rand($players, 1); //what ticket number won the lottery, (var_dump to be able to see the output) echo "Winning Number = ".$players[$winningTicket]."<br/>";; //Who won the lottery, (var_dump to be able to see the output) echo "Winning Person = Person No.".$winningTicket; ?>