//红包随机金额
function get_redenvelope_money(){
$pool = M('redenvelope_pool')->where("id=1")->find();
if ($pool['money']&&$pool['num']) {
$num = $pool['money']/$pool['num'];
$num = round($num, 2)/2;//四舍五入
$money = rand($num*100,$num*200)/100;//取随机数
return $money;
}else{
return 0;
}
}