Php 如何从字段名和列中检索数据以生成图形_Php_Mysql

Php 如何从字段名和列中检索数据以生成图形

php mysql

Php 如何从字段名和列中检索数据以生成图形,php,mysql,Php,Mysql,下面的代码是我用来尝试使用pchart生成图形的代码。我已经能够生成一些图形。目前的图表是这样的：第二张图表应该是基于我手动输入的值。我想做的是从mysql数据库中检索数据，而不需要手动输入数据，因此图表是动态生成的这是我的密码。我不确定是查询还是不正确的数组导致图表无法生成响应 <?php /* CAT:Bar Chart */ /* pChart library inclusions */ include("pchart/class/pData.class.php");

下面的代码是我用来尝试使用pchart生成图形的代码。我已经能够生成一些图形。目前的图表是这样的：第二张图表应该是基于我手动输入的值。我想做的是从mysql数据库中检索数据，而不需要手动输入数据，因此图表是动态生成的

这是我的密码。我不确定是查询还是不正确的数组导致图表无法生成响应

<?php    
/* CAT:Bar Chart */ 

/* pChart library inclusions */ 
include("pchart/class/pData.class.php"); 
include("pchart/class/pDraw.class.php");
include("pchart/class/pImage.class.php"); 

/* Create and populate the pData object */ 
$myData = new pData();   
$myData->addPoints(array($Yes,$Result)); 
$myData->addPoints(array($No,$Result));
$myData->addPoints(array($Undecided,$Result));
$myData->setAxisName(0,"Number of Responses"); 
$myData->addPoints(array("Yes","No","Undecided"),"Types of Responses"); 
$myData->setSerieDescription("Types of Responses","Types of Responses"); 
$myData->setAbscissa("Types of Responses"); 
$myData->setAbscissaName("Types of Responses"); 

/* Connect to the MySQL database */

$db = mysql_connect("host", "user", "pass");
mysql_select_db("thedatabase",$db);

/* Build the query that will returns the data to graph */

$Requete = "SELECT `Do you have an interest in Green IT` FROM `replies`";

$Result  = mysql_query($Requete,$db);
$Yes=""; $No=""; $Undecided="";
while($row = mysql_fetch_array($Result))
{

/* Push the results of the query in an array */
$Yes[]   = $row["Yes"];
$No[] = $row["No"];
$Undecided[] = $row["Undecided"];
}

/* Create the pChart object */ 
$myPicture = new pImage(500,500,$myData); 
$myPicture->drawGradientArea(0,0,500,500,DIRECTION_VERTICAL,array("StartR"=>240,"StartG"=>240,"StartB"=>240,"EndR"=>180,"EndG"=>180,"EndB"=>180,"Alpha"=>100)); 
$myPicture->drawGradientArea(0,0,500,500,DIRECTION_HORIZONTAL,array("StartR"=>240,"StartG"=>240,"StartB"=>240,"EndR"=>180,"EndG"=>180,"EndB"=>180,"Alpha"=>20)); 
$myPicture->setFontProperties(array("FontName"=>"pchart/fonts/pf_arma_five.ttf","FontSize"=>6)); 

/* Draw the chart scale */  
$myPicture->setGraphArea(100,30,480,480); 
$myPicture->drawScale(array("CycleBackground"=>TRUE,"DrawSubTicks"=>TRUE,"GridR"=>0,"GridG"=>0,"GridB"=>0,"GridAlpha"=>10,"Pos"=>SCALE_POS_TOPBOTTOM)); 

/* Turn on shadow computing */  
$myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>10)); 

/* Create the per bar palette */ 
$Palette = array("0"=>array("R"=>188,"G"=>224,"B"=>46,"Alpha"=>100), 
              "1"=>array("R"=>224,"G"=>100,"B"=>46,"Alpha"=>100), 
              "2"=>array("R"=>224,"G"=>214,"B"=>46,"Alpha"=>100), 
              "3"=>array("R"=>46,"G"=>151,"B"=>224,"Alpha"=>100), 
              "4"=>array("R"=>176,"G"=>46,"B"=>224,"Alpha"=>100), 
              "5"=>array("R"=>224,"G"=>46,"B"=>117,"Alpha"=>100), 
              "6"=>array("R"=>92,"G"=>224,"B"=>46,"Alpha"=>100), 
              "7"=>array("R"=>224,"G"=>176,"B"=>46,"Alpha"=>100)); 

 /* Draw the chart */  
 $myPicture->drawBarChart(array("DisplayPos"=>LABEL_POS_INSIDE,"DisplayValues"=>TRUE,"Rounded"=>TRUE,"Surrounding"=>30,"OverrideColors"=>$Palette)); 

/* Write the legend */  
$myPicture->drawLegend(570,215,array("Style"=>LEGEND_NOBORDER,"Mode"=>LEGEND_HORIZONTAL)); 

/* Render the picture (choose the best way) */ 
$myPicture->autoOutput("pictures/example.drawBarChart.palette.png"); 
?>

我哪里做错了

谢谢

假设每个受访者都有一条记录，那么查询应该是这样的-

SELECT `Do you have an interest in Green IT`, COUNT(*) AS num
FROM replies
GROUP BY `Do you have an interest in Green IT`

然后，此查询返回的每一行都可以作为点添加到数据集中。正如其他人指出的，为了将数据传递给图表类，您需要首先运行查询-

<?php    
/* CAT:Bar Chart */ 

/* pChart library inclusions */ 
include("pchart/class/pData.class.php"); 
include("pchart/class/pDraw.class.php");
include("pchart/class/pImage.class.php"); 

/* Create and populate the pData object */ 
$myData = new pData();   
$myData->setAxisName(0,"Number of Responses"); 
$myData->setSerieDescription("Types of Responses","Types of Responses"); 
$myData->setAbscissa("Types of Responses"); 
$myData->setAbscissaName("Types of Responses"); 

/* Connect to the MySQL database */

$db = mysql_connect("host", "user", "pass");
mysql_select_db("thedatabase",$db);

/* Build the query that will returns the data to graph */

$Requete = "SELECT `Do you have an interest in Green IT` AS resp, COUNT(*) AS num FROM replies GROUP BY resp";

$Result  = mysql_query($Requete,$db);

while($row = mysql_fetch_array($Result))
{
    $myData->addPoints(array($row['resp'], $row['num'])); 
}

您试图在从数据库中取出数据之前将数据传递给addPoints方法。看起来你也在使用数据，有点奇怪。您正在使用行中的潜在值作为列名。您需要使用@nnichols post之类的工具
在addPoints
方法中，您试图传递什么作为第二个选项？您传递的是数据库资源，但我发现奇怪的是，图表应用程序在要求特定的数字时需要它-是您想要传递的行总数吗
我还建议您重命名表中的列，使用像对绿色感兴趣\u it
这样的名称，而不是您对绿色it感兴趣吗

就使用前获取数据而言，您需要以这种方式使用它：
<?php    
/* CAT:Bar Chart */ 

/* pChart library inclusions */ 
include("pchart/class/pData.class.php"); 
include("pchart/class/pDraw.class.php");
include("pchart/class/pImage.class.php");

/* Connect to the MySQL database */

$db = mysql_connect("host", "user", "pass");
mysql_select_db("thedatabase",$db);

/* Build the query that will returns the data to graph */

$Yes = "";
$No = "";
$Undecided = "";

$Requete = "SELECT `Do you have an interest in Green IT` FROM `replies`";

$Result  = mysql_query($Requete,$db);

while($row = mysql_fetch_array($Result))
{
    /* Push the results of the query in an array */
    $Yes[]   = $row["Yes"];
    $No[] = $row["No"];
    $Undecided[] = $row["Undecided"];
}

/* Create and populate the pData object */ 
$myData = new pData();   
$myData->addPoints(array($Yes,$Result)); 
$myData->addPoints(array($No,$Result));
$myData->addPoints(array($Undecided,$Result));
$myData->setAxisName(0,"Number of Responses"); 
$myData->addPoints(array("Yes","No","Undecided"),"Types of Responses"); 
$myData->setSerieDescription("Types of Responses","Types of Responses"); 
$myData->setAbscissa("Types of Responses"); 
$myData->setAbscissaName("Types of Responses"); 

/* Create the pChart object */ 
$myPicture = new pImage(500,500,$myData); 
$myPicture->drawGradientArea(0,0,500,500,DIRECTION_VERTICAL,array("StartR"=>240,"StartG"=>240,"StartB"=>240,"EndR"=>180,"EndG"=>180,"EndB"=>180,"Alpha"=>100)); 
$myPicture->drawGradientArea(0,0,500,500,DIRECTION_HORIZONTAL,array("StartR"=>240,"StartG"=>240,"StartB"=>240,"EndR"=>180,"EndG"=>180,"EndB"=>180,"Alpha"=>20)); 
$myPicture->setFontProperties(array("FontName"=>"pchart/fonts/pf_arma_five.ttf","FontSize"=>6)); 

/* Draw the chart scale */  
$myPicture->setGraphArea(100,30,480,480); 
$myPicture->drawScale(array("CycleBackground"=>TRUE,"DrawSubTicks"=>TRUE,"GridR"=>0,"GridG"=>0,"GridB"=>0,"GridAlpha"=>10,"Pos"=>SCALE_POS_TOPBOTTOM)); 

/* Turn on shadow computing */  
$myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>10)); 

/* Create the per bar palette */ 
$Palette = array("0"=>array("R"=>188,"G"=>224,"B"=>46,"Alpha"=>100), 
              "1"=>array("R"=>224,"G"=>100,"B"=>46,"Alpha"=>100), 
              "2"=>array("R"=>224,"G"=>214,"B"=>46,"Alpha"=>100), 
              "3"=>array("R"=>46,"G"=>151,"B"=>224,"Alpha"=>100), 
              "4"=>array("R"=>176,"G"=>46,"B"=>224,"Alpha"=>100), 
              "5"=>array("R"=>224,"G"=>46,"B"=>117,"Alpha"=>100), 
              "6"=>array("R"=>92,"G"=>224,"B"=>46,"Alpha"=>100), 
              "7"=>array("R"=>224,"G"=>176,"B"=>46,"Alpha"=>100)); 

 /* Draw the chart */  
 $myPicture->drawBarChart(array("DisplayPos"=>LABEL_POS_INSIDE,"DisplayValues"=>TRUE,"Rounded"=>TRUE,"Surrounding"=>30,"OverrideColors"=>$Palette)); 

/* Write the legend */  
$myPicture->drawLegend(570,215,array("Style"=>LEGEND_NOBORDER,"Mode"=>LEGEND_HORIZONTAL)); 

/* Render the picture (choose the best way) */ 
$myPicture->autoOutput("pictures/example.drawBarChart.palette.png"); 
?>


在填充数据之前，您正在使用$result、$yes$no和$defined变量。我应该将查询移到生成的图形之前？表的结构是什么？发布CREATETABLE语句。正如@Bengrifiths所指出的，您确实应该对字段名做些什么。使用句子真是个糟糕的主意。非常感谢你们的帮助。但我遇到了一个问题——数据被跨条多次复制。我试图将其限制为3条，但很难做到这一点，因为我只想输出字段“您对绿色it感兴趣吗”的图形，而不是其他任何内容。它确实有效，但是，很小的一点是，我不能让它为每个响应显示单个条。是（19）否（6）未决定（3），而不是我现在拥有的众多酒吧。感谢您在PMA或任何您喜欢的db工具中运行查询来检查您的查询。如果添加了GROUPBY子句，则每个不同的响应只能有一条记录。
<?php    
/* CAT:Bar Chart */ 

/* pChart library inclusions */ 
include("pchart/class/pData.class.php"); 
include("pchart/class/pDraw.class.php");
include("pchart/class/pImage.class.php");

/* Connect to the MySQL database */

$db = mysql_connect("host", "user", "pass");
mysql_select_db("thedatabase",$db);

/* Build the query that will returns the data to graph */

$Yes = "";
$No = "";
$Undecided = "";

$Requete = "SELECT `Do you have an interest in Green IT` FROM `replies`";

$Result  = mysql_query($Requete,$db);

while($row = mysql_fetch_array($Result))
{
    /* Push the results of the query in an array */
    $Yes[]   = $row["Yes"];
    $No[] = $row["No"];
    $Undecided[] = $row["Undecided"];
}

/* Create and populate the pData object */ 
$myData = new pData();   
$myData->addPoints(array($Yes,$Result)); 
$myData->addPoints(array($No,$Result));
$myData->addPoints(array($Undecided,$Result));
$myData->setAxisName(0,"Number of Responses"); 
$myData->addPoints(array("Yes","No","Undecided"),"Types of Responses"); 
$myData->setSerieDescription("Types of Responses","Types of Responses"); 
$myData->setAbscissa("Types of Responses"); 
$myData->setAbscissaName("Types of Responses"); 

/* Create the pChart object */ 
$myPicture = new pImage(500,500,$myData); 
$myPicture->drawGradientArea(0,0,500,500,DIRECTION_VERTICAL,array("StartR"=>240,"StartG"=>240,"StartB"=>240,"EndR"=>180,"EndG"=>180,"EndB"=>180,"Alpha"=>100)); 
$myPicture->drawGradientArea(0,0,500,500,DIRECTION_HORIZONTAL,array("StartR"=>240,"StartG"=>240,"StartB"=>240,"EndR"=>180,"EndG"=>180,"EndB"=>180,"Alpha"=>20)); 
$myPicture->setFontProperties(array("FontName"=>"pchart/fonts/pf_arma_five.ttf","FontSize"=>6)); 

/* Draw the chart scale */  
$myPicture->setGraphArea(100,30,480,480); 
$myPicture->drawScale(array("CycleBackground"=>TRUE,"DrawSubTicks"=>TRUE,"GridR"=>0,"GridG"=>0,"GridB"=>0,"GridAlpha"=>10,"Pos"=>SCALE_POS_TOPBOTTOM)); 

/* Turn on shadow computing */  
$myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>10)); 

/* Create the per bar palette */ 
$Palette = array("0"=>array("R"=>188,"G"=>224,"B"=>46,"Alpha"=>100), 
              "1"=>array("R"=>224,"G"=>100,"B"=>46,"Alpha"=>100), 
              "2"=>array("R"=>224,"G"=>214,"B"=>46,"Alpha"=>100), 
              "3"=>array("R"=>46,"G"=>151,"B"=>224,"Alpha"=>100), 
              "4"=>array("R"=>176,"G"=>46,"B"=>224,"Alpha"=>100), 
              "5"=>array("R"=>224,"G"=>46,"B"=>117,"Alpha"=>100), 
              "6"=>array("R"=>92,"G"=>224,"B"=>46,"Alpha"=>100), 
              "7"=>array("R"=>224,"G"=>176,"B"=>46,"Alpha"=>100)); 

 /* Draw the chart */  
 $myPicture->drawBarChart(array("DisplayPos"=>LABEL_POS_INSIDE,"DisplayValues"=>TRUE,"Rounded"=>TRUE,"Surrounding"=>30,"OverrideColors"=>$Palette)); 

/* Write the legend */  
$myPicture->drawLegend(570,215,array("Style"=>LEGEND_NOBORDER,"Mode"=>LEGEND_HORIZONTAL)); 

/* Render the picture (choose the best way) */ 
$myPicture->autoOutput("pictures/example.drawBarChart.palette.png"); 
?>