Question

我想通过使用php创建一个数据来自oracle的图形。我没有找到使用oracle作为数据库的示例。大部分来自mysql。数据就像这样

我已经制作了这段代码，但它没有用。它的节目如

data.php

   <?php
    header('Content-Type: application/json');
    $conn = oci_connect('***', '***', '127.0.0.1/orcl');

    $graph=sprintf("SELECT count(pm.packagename) as quantity,pm.packagename
        FROM packagemenu pm
        INNER JOIN orderdetail od ON od.packageid=pm.packageid
        inner join orders o on o.orderid = od.orderid
        group by pm.packagename");
     $parse=oci_parse($conn,$graph);
    oci_execute($parse);
    $data=array();
    while($row1 = oci_fetch_array($parse)){
    $data[]=$row1;

    }
     print json_encode($data);

    ?>

bargraph.html

<!DOCTYPE html>
<html>
<head>
    <title>ChartJS - BarGraph</title>
    <style type="text/css">
        #chart-container {
            width: 640px;
            height: auto;
        }
    </style>
 </head>
 <body>
    <div id="chart-container">
        <canvas id="mycanvas"></canvas>
    </div>

    <!-- javascript -->
    <script type="text/javascript" src="js/jquery-3.2.1.min.js"></script>
    <script type="text/javascript" src="js/Chart.min.js"></script>
    <script type="text/javascript" src="js/app.js"></script>
 </body>

apps.js

  $(document).ready(function(){
  $.ajax({
    url: "http://localhost/psm/admin/data.php",
    method: "GET",
    success: function(data) {
        console.log(data);
        var packagename = [];
        var quantity = [];

        for(var i in data) {
            packagename.push("Packagename " + data[i].packagename);
            quantity.push(data[i].quantity);
        }

        var chartdata = {
            labels: packagename,
            datasets : [
                {
                    label: 'Package Name',
                    backgroundColor: 'rgba(200, 200, 200, 0.75)',
                    borderColor: 'rgba(200, 200, 200, 0.75)',
                    hoverBackgroundColor: 'rgba(200, 200, 200, 1)',
                    hoverBorderColor: 'rgba(200, 200, 200, 1)',
                    data: quantity
                }
            ]
        };

        var ctx = $("#mycanvas");

        var barGraph = new Chart(ctx, {
            type: 'bar',
            data: chartdata
        });
      },
      error: function(data) {
        console.log(data);
      }
    });
 });

Answer 1

由于数据是这样的：

 [{"0":"8","QUANTITY":"8","1":"Set A","PACKAGENAME":"Set A"},{"0":"5","QUANTITY":"5","1":"Set B","PACKAGENAME":"Set B"}]

您遇到区分大小写问题，这会使数组变量packagename和quantity为空/未分解。

您需要更改：

    for(var i in data) {
        packagename.push("Packagename " + data[i].packagename);
        quantity.push(data[i].quantity);
    }

...到......

    for(var i in data) {
        packagename.push("Packagename " + data[i].PACKAGENAME);
        quantity.push(data[i].QUANTITY);
    }

我不熟悉Chart.js，但修复此问题，这样你就不会尝试绘制未定义的变量，这是第一步。

如何使用来自oracle

1 个答案: