<?php
use think\Db;
use think\Exception;
use app\common\model\MoneyLog;
// 更新会员余额
function user_rebate($user_id,$balance,$source,$related_id=0,$from_user= 0,$desc=''){
    $user_info = Db::table('fa_user')->find($user_id);
    $balance_data=[
        'user_id' => $user_id ,
        'money' => $balance ,
        'before' => $user_info['money'] ,
        'after' => bcadd($user_info['money'],$balance,2) ,
        'source' =>  $source ,
        'memo' =>  $desc ,
        'create_time' => date('Y-m-d H:i:s'),
        'related_id' => $related_id,
        'from_user' => $from_user,
    ];
    Db::startTrans();
    try {
        Db::table('fa_user')->where('id',$user_id)->update(['money'=>$balance_data['surplus']]);
        MoneyLog::create($balance_data);
    }catch (Exception $e){
        Db::rollback();
    }

}