我想基于数据库生成折线图。第一次使用融合图时,我遵循融合图文档中动态图的过程。这是我的php页面代码:

<?php
include("Includes/FusionCharts.php");
include("Includes/DBconn.php");
?>
<html>
    <title> Blood Pressure</title>
    <head>
        <script language="javascript" src="FusionCharts/FusionChart.js"></script>

    </head>
    <body>
    <center>
        <?php

        //connect to the DB
        $link= connectToDB();
        //$strXML will be used to store the entire XML document generated
   //Generate the graph element
   $strXML = "<graph caption='Blood Pressure Reading' subCaption='By Patient'xaxisname='Months' yaxisname='Blood Pressure' hovercapbg='F5589A' hovercapborder='F5589A' rotateNames='1' yAxisMaxValue='200'>";

   //Fetch records from database
   $query= "select * from patient_health";
   $result = mysql_query($query) or die(mysql_error());
   echo $result;

   //Iterate through each patient blood pressure systole

       while($row= mysql_num_rows($result)){
           //Generate the setname and value
          // echo $row['Date'];
           //echo $row['Systole_reading'];
           $strXML.="<set name='".$row['Date']."'value='".  $row['Systole_reading']."'/>";
           mysql_free_result($result);
       }

       //Finally, close <graph> element
   $strXML .= "</graph>";
   //Create the chart - Pie 3D Chart with data from $strXML
   echo renderChart("FusionCharts/FCF_Line.swf", "", $strXML, "BloodPressure", 650, 450);

       ?>

    </center>

    </body>

</html>


我收到以下错误消息:
警告:mysql_num_rows():第28行的C:\ xampp \ htdocs \ phpfusion \ ramfusion \ Chart.php中的6不是有效的MySQL结果资源
图表。
任何人都可以在这方面帮助我,
先感谢您,
拉姆赛

最佳答案

因为您试图遍历行数(6),而不是行本身。尝试

while($row= mysql_fetch_assoc($result)){


而是在您的循环上。这将返回行的关联数组,然后将其循环,将每一行放入$row中。

关于php - 在融合图表的php和mysql中未生成图形,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/10244609/

10-09 12:50