如何在循环和数组内部插入数据 [英] how to insert data while looping and inside array as well

问题描述

这是我的餐桌顺序：

+-------+-------+
| month | count |
+-------+-------+
|     6 |    11 |
|    11 |    27 |
|    12 |     9 |
+-------+-------+

我想使用融合图。假设年份是2017年，如何将缺少的月份放入正在使用的Fusioncharts数组中？我陷入了困境。

I want to create a graph using fusioncharts. Let's say that the year is 2017. How do I put the missing month into the array of which fusioncharts I'm using? I'm stuck on the condition.

这是我的代码：

$strQuery2 = "SELECT DATE_FORMAT(order_date, '%c') as month, COUNT(*) AS cnt FROM orders where YEAR(order_date)='2017' GROUP BY month  ORDER BY `month` DESC";
$result2 = $dbhandle->query($strQuery2);
// Push the data into the array
while($row2 = $result2->fetch_assoc()) {
    $q = $row2["month"];
    $w = $row2["cnt"];
    $e = 0;
    $x = 1;
    if ($x != $q){
        echo "true";
        array_push($arrData2["data"],
            array(
                "label" => $row2[$x],
                "value" => $row2[$e]
            )
        );
    }
    else{
        echo "false";
        array_push($arrData2["data"],
            array(
                "label" => $row2["month"],
                "value" => $row2["cnt"]
            )
        );
    }
    $x++;
    echo $row2["month"] . "<br />";
    echo $row2["cnt"] . "<br />";
}

推荐答案

不存在的数据库。如果将数据推送到空数组中：

You never get a month from the database that isn't there. If you push data into an empty array:

array_push($arrData2["data"]

最后您仍然得到一个仅包含从数据库返回的月份的数组。

you still end up with an array that only contains the months returned from the database.

您可以做的是首先创建一个所有12个月的数组：

What you can do is first create an array with all 12 months:

$arrData2["data"]=range(1,12,false);

您现在拥有一个包含12个元素（月）的数组1-12，所有值都为 false （您可以使用任何值，数组或false（如果需要））
现在，在resultloop中，只需替换您具有以下值的数组元素：

You have now an array that contains 12 elements (months) from 1 - 12, all with values of false. (You could use any value, an array or false if you need). Now inside your resultloop, just replace the array elements you have values for:

$arrData2["data"][$row2["month"]] = array(
      'label' => $row2["month"],
      'value' => $row2["cnt"]
      );

$ arrData2现在看起来像：

$arrData2 now will look like:

array( 
   1 => false,
   2 => false,
   3 => false,
   4 => false,
   5 => false,
   6 => array('label'=> 6,'value'=> 11),
   7 => false,
   8 => false,
   9 => false,
  10 => false,
  11 => array('label'=> 11,'value'=> 27),
  12 => array('label'=> 12,'value'=> 9)
)

现在，您可以将所有 false 值替换为值 0

Now you can replace all the false values for arrays with value 0

因此您的整个代码可以简化为：

So your whole code could be schortened to:

//set empty array
$arrData2['data'] = range(1, 12, false);

//fill elements we know
while($row2 = $result2->fetch_assoc()) {
    $arrData2["data"][$row2["month"]] = array(
      'label' => $row2["month"],
      'value' => $row2["cnt"]
      );
    }

//replace the rest with 0
foreach($arrData2["data"] as $key => $value){
    // skip what we already know
    if($values !== false) continue;
    // replace the rest
    $arrData2["data"][$key]=array(
                              'label'=>$key,
                              'value'=> 0
                              );
}
echo print_r($arrData2,true);

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