$db = Flight::db();
$prizes = $db->select('tb_luckdraw_prize', ['prize_id', 'all_num'], [
	'luckdraw_id' => 1,
	'ORDER' => [
		'all_num' => 'DESC'
	]
]);
if(empty($prizes)){
	return false;
}
$prize_num = array_sum(array_column($prizes, 'all_num'));
$step = floor(1000 / $prize_num);//

$prize_arr = [];
foreach($prizes as $v){
	for($i = 0; $i < $v['all_num']; $i++){
		$prize_arr[] = $v['prize_id'];
	}
}

// 循环生成中奖数据
$insert = [];
$pStatus = true;

for($i = 0; $i < 1000; $i++){
	$y = $i%$step;

	if(empty($prize_arr)){
		break;
	}

	if($y == 0){
		$pStatus = true;
	}
	
	if(!$pStatus){
		continue;
	}
	//前5人百分之五，第六人必中奖
	if($y == $step - 1 || rand(1, 100) < 6){

		$pStatus = false;
		$insert[] = [
			'activity_id' => 1,
			'luckdraw_id' => 1,
			'prize_id' => array_shift($prize_arr),
			'place' => $i
		];
	}
}