php - 将 mysql 结果导入 Jpgraph

Question

我是第一次使用 JPgraph，并尝试将 mysql 查询结果放入数组中，以获取基于示例 bargradsmallex4.php 的代码。我尝试过各种语法，但不太熟悉 mysql_fetch_array() 并且无法让它将数据插入数组。任何帮助，将不胜感激。该查询已经过测试并生成结果，因此它不是查询本身。

$sql= mysql_query('SELECT agency,current,sum(current) 
FROM table2 WHERE MATCH(agency) AGAINST("health" IN BOOLEAN MODE) GROUP BY agency  ');


// We need some data
$datay = array();

while($row = mysql_fetch_array($sql))

$datay[] = array(
 'current' => $row['sum(current)'],

);


// Setup the graph. 
$graph = new Graph(400,300);    
$graph->SetScale("textlin");
$graph->img->SetMargin(25,15,25,25);

$graph->title->Set('"GRAD_VER"');
$graph->title->SetColor('darkred');

// Setup font for axis
$graph->xaxis->SetFont(FF_FONT1);
$graph->yaxis->SetFont(FF_FONT1);

// Create the bar pot
$bplot = new BarPlot($datay);
$bplot->SetWidth(0.6);

// Setup color for gradient fill style 
$bplot->SetFillGradient("navy","lightsteelblue",GRAD_VER);

// Set color for the frame of each bar
$bplot->SetColor("navy");
$graph->Add($bplot);

// Finally send the graph to the browser
$graph->Stroke();

Answer 1

我对您的代码做了一些更改。

1- 设置 sum(current) 的 alice

2- 设置 while 循环和 $datay 数组。

请尝试一下，希望它能为您提供所需的输出。

$sql= mysql_query('SELECT agency,current,sum(current) as sum_of_current FROM table2 WHERE MATCH(agency) AGAINST("health" IN BOOLEAN MODE) GROUP BY agency');


// We need some data
$datay = array();

while($row = mysql_fetch_array($sql)) {
    $datay[] = $row['sum_of_current'];
}


// Setup the graph. 
$graph = new Graph(400,300);    
$graph->SetScale("textlin");
$graph->img->SetMargin(25,15,25,25);

$graph->title->Set('"GRAD_VER"');
$graph->title->SetColor('darkred');

// Setup font for axis
$graph->xaxis->SetFont(FF_FONT1);
$graph->yaxis->SetFont(FF_FONT1);

// Create the bar pot
$bplot = new BarPlot($datay);
$bplot->SetWidth(0.6);

// Setup color for gradient fill style 
$bplot->SetFillGradient("navy","lightsteelblue",GRAD_VER);

// Set color for the frame of each bar
$bplot->SetColor("navy");
$graph->Add($bplot);

// Finally send the graph to the browser
$graph->Stroke();