get random gift

game.php

<?php
$fh = fopen(__DIR__ . '/gift.csv', 'r');
fgetcsv($fh, 2048);
fgetcsv($fh, 2048);
$pool = [];
$count = 0;
while ($line = fgetcsv($fh, 2048)) {
    if (!empty($line[0])) {
        $pool[$line[0]] = $line[1];
        $count += $line[1];
    }
}

$fh = fopen(__DIR__ . '/skip.csv', 'r');
$skip1 = [];
fgetcsv($fh, 2048);
fgetcsv($fh, 2048);
while ($line = fgetcsv($fh, 2048)) {
    $skip1[$line[2]] = true;
}
$fh = fopen(__DIR__ . '/skip2.csv', 'r');
fgetcsv($fh, 2048);
fgetcsv($fh, 2048);
while ($line = fgetcsv($fh, 2048)) {
    $skip1[$line[2]] = true;
}

$fh = fopen(__DIR__ . '/full.csv', 'r');
$count = 0;
$candidates = [];
fgetcsv($fh, 2048);
fgetcsv($fh, 2048);
while ($line = fgetcsv($fh, 2048)) {
    if (!isset($skip1[$line[3]])) {
        $candidates[] = [
            $line[1],
            $line[3]
        ];
    }
}

shuffle($candidates);
$oFh = fopen(__DIR__ . '/result.csv', 'w');
fputcsv($oFh, ['gift', 'name', 'comment_id']);
foreach($candidates AS $candidate) {
    $giftGet = false;
    foreach($pool AS $k => $v) {
        if(false === $giftGet && $v > 0) {
            $giftGet = true;
            $candidate[] = $k;
            $pool[$k] -= 1;
            echo "恭喜 {$candidate[0]} 獲得 {$k}\n";
            sleep(1);
            fputcsv($oFh, [$k, $candidate[0], $candidate[1]]);
        }
    }
}