Php Highcharts-显示所有日期，即使没有值

我使用PHP和MySQL获取所选时间段内每天的订单总量，然后使用PHP将它们保存在*.csv文件中。我从csv文件生成图表，一切正常，但我需要包括没有订单的天数。*。csv文件内容类似于：

1,05-01
1,05-02
2,05-04
1,05-06

因此，在图表上，它们显示为1张5月1日的订单，1张5月2日的订单，然后跳过5月3日的订单-我需要在图表上显示值为0的订单。可以使用jQuery/highcharts（我对javascript没有太多经验）来完成吗？或者我应该编辑PHP来创建具有这些值的文件，如下所示：

1,05-01
1,05-02
0,05-03
2,05-04
0,05-05
1,05-06

$result2 = mysqli_query($con,"$query2");
$fp = fopen('data/temp.csv', 'w');
$dayCompare=date("n-d", strtotime($theDay));    //I know which day is the first one selected so I save it as variable #theDay
while ($row = mysqli_fetch_array($result2)) {
    if ($row['Date'] !== $dayCompare){
        while ($row['Date'] !== $dayCompare){ //This "while" keeps on looping till the date from database matches the day
            fputcsv($fp, array('0,'.$dayCompare));
            $theDay= date("Y/m/d", strtotime($theDay . "+1 day"));
            $dayCompare=date("n-d", strtotime($theDay));
        }
    } //Rest of the code is to be executed when dates match
    fputcsv($fp, array($row['Orders'].",".$row['Date']));
    $theDay= date("Y/m/d", strtotime($theDay . "+1 day"));
    $dayCompare=date("n-d", strtotime($theDay));
}
for ($theDay; $theDay <= $lastDay; strtotime($theDay . "+1 day")) { //I added a "for" loop to fill in the empty days if the day of last order is earlier than the last day selected/current day.
    fputcsv($fp, array('0,'.$dayCompare));
    $theDay= date("Y/m/d", strtotime($theDay . "+1 day"));
    $dayCompare=date("n-d", strtotime($theDay));
}

我使用以下PHP代码保存文件：

$result = mysqli_query($con,"$query");
        $fp = fopen('data/temp.csv', 'w');
        if ($fp && $result) {
            while ($row = $result->fetch_array(MYSQLI_NUM)) {
                fputcsv($fp, array_values($row));
            }
        }

和以下脚本生成图表：

var myCategories = [];
var myData = [];
var myChart;

$(document).ready(function() {
    var options = {
    chart: {
        renderTo: 'chart-container',
        defaultSeriesType: 'column'
    },
    title: {
        text: 'Orders received in selected days'
    },
    xAxis: {
        title: {text: 'Date'},
        categories: []
    },
    yAxis: {
        title: {
            text: 'Orders'
        }
    },
    series: []
    };
    $.get('data/temp.csv', function(data) {
        var lines = data.split('\n').slice(0, -1); //generated csv file has \n after last entry so there is always an empty line I have to delete
        $.each(lines, function(lineNo, line) {
            var items = line.split(',');
            myCategories.push(items[1]);
            myData.push(parseInt(items[0]));
        });
        options.xAxis.categories = myCategories;
        options.series = [{ data: myData }];
        myChart = new Highcharts.Chart(options);
    });
});

---

我找到的唯一解决方案是在MySQL端创建一些疯狂的查询（我倾向于在PHP中处理该逻辑），似乎HighCharts无法做到这一点，所以最后我稍微修改了我的PHP代码，添加了一些额外的循环。如果有人感兴趣，现在看起来是这样的：

1,05-01
1,05-02
0,05-03
2,05-04
0,05-05
1,05-06

$result2 = mysqli_query($con,"$query2");
$fp = fopen('data/temp.csv', 'w');
$dayCompare=date("n-d", strtotime($theDay));    //I know which day is the first one selected so I save it as variable #theDay
while ($row = mysqli_fetch_array($result2)) {
    if ($row['Date'] !== $dayCompare){
        while ($row['Date'] !== $dayCompare){ //This "while" keeps on looping till the date from database matches the day
            fputcsv($fp, array('0,'.$dayCompare));
            $theDay= date("Y/m/d", strtotime($theDay . "+1 day"));
            $dayCompare=date("n-d", strtotime($theDay));
        }
    } //Rest of the code is to be executed when dates match
    fputcsv($fp, array($row['Orders'].",".$row['Date']));
    $theDay= date("Y/m/d", strtotime($theDay . "+1 day"));
    $dayCompare=date("n-d", strtotime($theDay));
}
for ($theDay; $theDay <= $lastDay; strtotime($theDay . "+1 day")) { //I added a "for" loop to fill in the empty days if the day of last order is earlier than the last day selected/current day.
    fputcsv($fp, array('0,'.$dayCompare));
    $theDay= date("Y/m/d", strtotime($theDay . "+1 day"));
    $dayCompare=date("n-d", strtotime($theDay));
}

现在它给我的唯一问题是数据保存在带有引号的*.csv文件中，但我通过修改*.js文件解决了这个问题，我的脚本更改了这一部分：

$.each(lines, function(lineNo, line) {
    var items = line.split(',');
    myCategories.push(items[1]);
    myData.push(parseInt(items[0]));
});

为此：

    $.each(lines, function(lineNo, line) {
        var items = line.split(',');
        myCategories.push(items[1].replace(/"/g,""));
        myData.push(parseInt(items[0].replace(/"/g,"")));
    });

由于修剪了引号，输出与预期一致。带日期的变量仍然是非常详细的，但它似乎是这样的，因为PHP在做数学方程时识别短日期有问题，我也希望有一天修改这个三重循环，但这至少要等到下一次部署

---

最后，我又添加了一个循环，以在最后一天选择的日期晚于最后一个订单日期的空日中循环，例如，如果选择了5月9日，最后一个订单是在7日，那么第8和第9天将有2行添加0值。

当然，添加0值，如

0,05-03

将是一个好主意。我认为这会奏效，而且会是更容易的方法。