<?php

namespace UCore\Db;

use Illuminate\Support\Facades\DB;

class Helper
{

    /**
     * 检查是否已经开启事务
     * @throws \LogicException
     * @return void
     */
    static public function check_tr()
    {
        $level = DB::transactionLevel();
        if($level === 0){
            // 没有开启事务
            throw new \LogicException("transaction level is 0");
        }
        if($level > 1){
            // 没有开启事务
            throw new \LogicException("transaction level > 1");
        }

    }

}