PHP array for raffles-CodePudding

Im trying to make a raffle system The total of possible numbers are 60,000 Im selling 10,000 tickets There are 50,000 non used tickets that i have to use... so each ticket have a extra "opportunities" to win. 50,000 non selling tickets divided by 10,000 selling tickets Each ticket gets 5 extra opportunities.

Knowing this, what i need is something like this.

Ticket: Opport1,Opport2,Opport3,Opport4,Opport5

00001: ["20000","20001","40000","40001","60000"] 
00002: ["19999","20002","39999","40002","59999"]
00003: ["19998","20003","39998","40003","59998"] 
00004: ["19997","20004","39997","40004","59997"] 
00005: ["19996","20005","39996","40005","59996"]
.
.
.
09995: ["10006","29995","30006","49995","50006"]
09996: ["10005","29996","30005","49996","50005"]
09997: ["10004","29997","30004","49997","50004"]
09998: ["10003","29998","30003","49998","50003"]
09999: ["10002","29999","30002","49999","50002"]
10000: ["10001","30000","30001","50000","50001"]

Cos i cant use the already 10,000 selling tickets The first column start in 20,000 and descending to 10,001 Second column start in 20,001 and end in 30,000 and so on.

I already have this code and it works like this.

function randomGen($min, $max, $quantity) {
        $numbers = range($min, $max);
        $find = array("[","]");
        $replace = array("","");
        $cadena = str_replace($find, $replace, json_encode(array_slice($numbers, 0, $quantity)));
        return $cadena;
    }

    $minCol1 = 20000;
    $maxCol1 = 10001;

    $minCol2 = 20001;
    $maxCol2 = 30000;

    $minCol3 = 40000;
    $maxCol3 = 30001;

    $minCol4 = 40001;
    $maxCol4 = 50000;

    $minCol5 = 60000;
    $maxCol5 = 50001;
    for($i = 1; $i<=10000; $i  ){
        $oportunidades = randomGen($minCol1,$maxCol1,1).",".randomGen($minCol2,$maxCol2,1).",".randomGen($minCol3,$maxCol3,1).",".randomGen($minCol4,$maxCol4,1).",".randomGen($minCol5,$maxCol5,1);
        $str_arr = explode (",", $oportunidades);
        ?>
        <li>
            <span data-oportunidades='<? echo(json_encode($str_arr));?>'>
                <?=str_pad($i, 5, "0", STR_PAD_LEFT);?>
            </span>
        </li>
    <?
        $minCol1 = $minCol1 -1;
        $maxCol1 = $minCol1 -1;

        $minCol2 = $minCol2  1;
        $maxCol2 = $minCol2  1;

        $minCol3 = $minCol3 -1;
        $maxCol3 = $minCol3 -1;

        $minCol4 = $minCol4  1;
        $maxCol4 = $minCol4  1;

        $minCol5 = $minCol5 -1;
        $maxCol5 = $minCol5 -1;
    }

But im pretty sure this is NOT the right way to solve this.

Someone have any idea how to do this?

Thank you so much!

CodePudding user response：

Perhaps you want something like this:

// This is an example function to generate initial tickets
function genTickets(int $num): array
{
    $tickets = [];

    for ($i = 0; $i < $num; $i  ) {
        $tickets[] = $i   1;
    }

    return $tickets;
}

function getTicketsSlice(array $tickets, bool $ascending, int $count, int $offset): array
{
    $slice = array_slice($tickets, $offset, $count);

    if (!$ascending) {
        return array_reverse($slice);
    }

    return $slice;
}

function getSoldTicketsWithOpportunities(array $tickets, int $soldTicketsCnt): array
{
    $opportunities = (int)floor((count($tickets) - $soldTicketsCnt) / $soldTicketsCnt);

    $soldTickets = [];

    for ($i = 0; $i < $opportunities; $i  ) {
        $ascending = $i % 2 !== 0;

        foreach (getTicketsSlice($tickets, $ascending, $soldTicketsCnt, ($i   1) * $soldTicketsCnt) as $idx => $sliceItem) {
            $soldTickets[$idx][] = $sliceItem;
        }
    }

    return $soldTickets;
}

$totalTicketsCnt = 60000;
$soldTicketsCnt = 10000;

$tickets = genTickets($totalTicketsCnt);
$soldTickets = getSoldTicketsWithOpportunities($tickets, $soldTicketsCnt);

foreach ($soldTickets as $ticketId => $opportunities) {
    ?>
    <li>
        <span data-oportunidades='<?= json_encode($opportunities, JSON_THROW_ON_ERROR) ?>'>
            <?= str_pad((string)($ticketId   1), 5, "0", STR_PAD_LEFT) ?>
        </span>
    </li>
    <?php
}

Or in less automatic way:

// This is an example function to generate initial tickets
function genTickets(int $num): array
{
    $tickets = [];

    for ($i = 0; $i < $num; $i  ) {
        $tickets[] = $i   1;
    }

    return $tickets;
}

function getTicketsSlice(array $tickets, bool $ascending, int $count, int $offset): array
{
    $slice = array_slice($tickets, $offset, $count);

    if (!$ascending) {
        return array_reverse($slice);
    }

    return $slice;
}

$totalTicketsCnt = 60000;
$soldTicketsCnt = 10000;

$tickets = genTickets($totalTicketsCnt);

// Get tickets slice from 10000 to 20000 in reverse order
foreach (getTicketsSlice($tickets, false, $soldTicketsCnt, 10000) as $sliceItem) {
    $soldTickets[] = [$sliceItem];
}

// Apply next opportunities in ascending order
foreach (getTicketsSlice($tickets, true, $soldTicketsCnt, 20000) as $idx => $sliceItem) {
    $soldTickets[$idx][] = $sliceItem;
}

// Apply next opportunities in descending order
foreach (getTicketsSlice($tickets, false, $soldTicketsCnt, 30000) as $idx => $sliceItem) {
    $soldTickets[$idx][] = $sliceItem;
}

// Apply next opportunities in ascending order
foreach (getTicketsSlice($tickets, true, $soldTicketsCnt, 40000) as $idx => $sliceItem) {
    $soldTickets[$idx][] = $sliceItem;
}

// Apply next opportunities in descending order
foreach (getTicketsSlice($tickets, false, $soldTicketsCnt, 50000) as $idx => $sliceItem) {
    $soldTickets[$idx][] = $sliceItem;
}

foreach ($soldTickets as $ticketId => $opportunities) {
    ?>
    <li>
        <span data-oportunidades='<?= json_encode($opportunities, JSON_THROW_ON_ERROR) ?>'>
            <?= str_pad((string)($ticketId   1), 5, "0", STR_PAD_LEFT) ?>
        </span>
    </li>
    <?php
}