$number = 10; // 红包数
$total = 100; // 总金额
$wallet = array(); // 红包列表
// 算法for($i = $number; $i > 0; $i--){
$x = $i == 1 ? $total : mt_rand(1, $total/$i);
$total -= $x;
$wallet[] = $x;
}shuffle($wallet);
// 结果echo ‘total:‘, array_sum($wallet), ‘.‘;
echo ‘wallet:‘, join(‘,‘, $wallet);