PHP和MYSQLI在几个月内循环

我试图检索每个月（01、02、03等）的数据，但我不知道如何进行循环。现在我每个月都有这个！（如果你跳过了其他几个月，那么你就不必看到所有的月份）

数据库方案：

IP无符号整数-PK

基准日期不为空

告诉INT不为NULL-默认值为1

• 基准是指日期
• 说就是数

另外，将查询转换为准备好的语句是方便的还是至少是良好的做法？此代码只能在只有我和其他管理员才能访问的私人页面上使用。

使用查询：

SELECT count(*) AS num, EXTRACT(YEAR_MONTH FROM datum) as yearmonth  FROM unique_ip WHERE datum BETWEEN '2016-01-01' AND '2016-05-02' GROUP BY EXTRACT(YEAR_MONTH FROM datum) DESC";

---

此SQL将为您提供月份计数。

我真的不知道您打算做什么，但请尝试以下SQL：

$queryJanuary    = "SELECT count(datum) AS num FROM unique_ip WHERE (datum>='2016-01-01' AND datum<='2016-01-31')";
$queryFebruari   = "SELECT count(datum) AS num FROM unique_ip WHERE (datum>='2016-02-01' AND datum<='2016-02-28')";

$data            = array(); //INITIALIZE DATA TO AN EMPTY ARRAY...
try{
    $January     = $Connection->query($queryJanuary);
    $Februari    = $Connection->query($queryFebruari);

    $rowJanuari  = mysqli_fetch_assoc($January);
    $rowFebruari = mysqli_fetch_assoc($Februari);

    $january     = $rowJanuari['num'];
    $februari    = $rowFebruari['num'];
    $data        = array($january, $februari);
}catch(Exception $e){
    //HANDLE YOUR EXCEPTION HERE...
    die();
}

echo json_encode($data);

---

$queryjanur=“选择count（datum）作为num FROM unique_-ip，其中（datum>='2016-01-01'和datum='2016-02-01'和datum='2016-02-01'以及datum='2016-01-01'和datum尝试以下查询。这将帮助您在单个查询中进行所有月份的计数

$queryallmonth = "SELECT MONTHNAME(datum) Month,COUNT(ip) num FROM unique_ip GROUP BY DATE_FORMAT(datum, '%Y%m')"

出示你的桌子structure@SunilPachlangia我添加了itI。我正在尝试检索我的网站每月的访问量。数据库中充满了带有访问日期的唯一ip地址。我正在尝试计算每个月唯一ip的总数，并将其添加到阵列中。经过一些测试和试用，我更喜欢您的方法！在我看来，它更易于使用，也更易于阅读。谢谢，您还知道将输出放入数组的最佳方法吗？循环遍历结果，将yearmon作为数组的索引，并将计数指定为数组的值
$queryAll       = "SELECT COUNT(datum) AS countJan,
                   (SELECT COUNT(datum) FROM unique_ip WHERE (datum>='2016-02-01' AND datum<='2016-02-28')) AS countFeb  
                   FROM unique_ip AS af WHERE (datum>='2016-01-01' AND datum<='2016-01-31')";
$data            = array(); //INITIALIZE $data TO AN EMPTY ARRAY...
$rowAll          = array(); //INITIALIZE $rowAll TO AN EMPTY ARRAY...

try{
    $query       = $Connection->query($queryAll);
    $rowAll      = mysqli_fetch_assoc($query);
    $january     = $rowAll['countJan'];
    $februari    = $rowAll['countFeb'];
    $data        = array($january, $februari);
    // BUT YOU DON NOT NEED TO PUSH $january & $februari INTO THE $data ARRAY 
    // BECAUSE YOU HAVE THOSE VALUES ALREADY INSIDE THE $rowAll VARIABLE 
    // WHICH SHOULD CONTAIN THESE KEYS: "countJan" & "countFeb"
}catch(Exception $e){
    //HANDLE YOUR EXCEPTION HERE...
    die();
}

//DUMP THE VALUES TO SEE IF THEY ARE WHAT YOU EXPECTED 
var_dump($data);
var_dump(rowAll);

$queryallmonth = "SELECT MONTHNAME(datum) Month,COUNT(ip) num FROM unique_ip GROUP BY DATE_FORMAT(datum, '%Y%m')"