~~~ ##$min 最小值 $num 剩余数量 $剩余金额 $moneys 返回数组 function getRandomMoney($min, $num,$remainmoney,$moneys) { if ($num == 1) { $num --; $moneys[$num]=round($remainmoney * 100) / 100; return $moneys; } $max = $remainmoney / $num * 2; $money = mt_rand() / mt_getrandmax() * $max; $money = $money <= $min ? $min : $money; $money = floor($money * 100) / 100; $num--; $yue=$remainmoney-$money; $moneys[$num]=$money; return $this->getRandomMoney($min,$num,$yue,$moneys); } ~~~