Question

PHP中是否有办法获得round函数舍入的内容。

我的意思是，让我们假设我有

$totalRows = 54;
$v = round($totalRows, -1);

print $v // prints 50

这很好，但我想知道是否有办法让数字4被删除四舍五入$totalRows。我知道这可能与round()功能没什么关系，但它只是我试图实现的一个例子

Answer 1

你正在四舍五入到最接近的10.你可以使用模10来得到余数：

$totalRows = 54;
$remainder = $totalRows % 10;

print $remainder; //prints 4

Answer 2

简单地做

public void Write(byte[] parCurData)
{
    if (ReadPosition < 0 || WritePosition < 0)
        throw new ArgumentException();
    this.statusSet.Add("ReadWrite:-> " + ReadPosition + "-" + WritePosition);
    // var s = (FsMomitorIPCCrier)data;

    ////////lock (this.dataToSend)
    ////////{
    Thread.MemoryBarrier();
        LiveDataCount_CurIndex = dataQue.Where(i => i != null).Count();
    this.dataQue[LiveDataCount_CurIndex] = parCurData;

    Console.WriteLine("^^^^^" + Thread.CurrentThread.Name + " has Entered WritingThreads BRIDGE");
    Console.WriteLine("^^^^^[transactionsQue] = {1}{0}^^^^^[dataQue.LiveDataASIndex = {2}{0}^^^^^[Current Requests Count = {3}{0}", "\r\n", Wtransactions, LiveDataCount_CurIndex, ++dataDelReqCount);

    //this.itsTimeForWTrd2 = false;

    if (Wtransactions != 0 && Wtransactions > ThrededSafeQ_Initial_Capcity - 1)
    if (this.dataQueISFluded) this.DataQXpand();


    if (itsTimeForWTrd2)
    {

        bool firstWt = true;
        while (writerThread2Running)
        {
            if (!firstWt) continue;
            Console.WriteLine("SECOND WRITERThread [2] is In The CoffeeCorner");
                    firstWt=false;
        }

        this.dataDelivery2 = this.dataQue[LiveDataCount_CurIndex];
        Console.WriteLine("Activating SECOND WRITERThread [2]");
        itsTimeForWTrd2 = false;

        writerThread2Running = true;
        //writerThread1Running = true;
        writerThread2 = new System.Threading.Thread(WriterThread2);
        writerThread2.IsBackground = true;
        writerThread2.Name = this.DepoThreadName + "=[WRITER2]";
        writerThread2.Start();

    }
    else
    {
        bool firstWt = true;
        while (writerThread1Running)
        {
            if (!firstWt)continue;
                Console.WriteLine("WRITERThread [1] is In The CoffeeCorner");
            firstWt=false;
        }
        Console.WriteLine("Activating WRITERThread [1]");
        this.dataDelivery1 = this.dataQue[LiveDataCount_CurIndex]; 

        writerThread1Running = true;
        writerThread1 = new System.Threading.Thread(WriterThread1);
        writerThread1.IsBackground = true;
        writerThread1.Name = this.DepoThreadName+"=[WRITER1]";
        writerThread1.Start();
        itsTimeForWTrd2 = true;

    }
    Thread.MemoryBarrier();
}

据我所知，这不是检索它的函数，但纯数学运算应该足够好。

得到＆＃34;四舍五入的数字＆＃34;通过圆函数

2 个答案: