$number = 10; // 红包数$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);原文：http://www.cnblogs.com/SoulJaGod/p/4019096.html