Application example: PHP generates chart pChart (with source code)_PHP tutorial

Bangke Home Tutorial Application example: PHP generates chart pChart (with source code)_PHP tutorial is an open source chart generation library, mainly involving 3 Classes: Application example: PHP generates chart pChart (with source code)_PHP tutorial.class, pData.class, pCache .class, can generate more than 20 simple or complex charts, and supports PNG, JPG, and GIF common image formats. The data source can come from Database, CSV, or of course handwritten. To use PHP, you need to enable the GD service. Let’s take a look at the workflow of Application example: PHP generates chart pChart (with source code)_PHP tutorial first:

　

It is mainly divided into three steps:

1. * Read data (database, file) used to generate charts
2. * Design chart style (rounded corners, background color, etc.)
3. * Make labels, titles, legends and generate charts

Look at a simple bar chart below:

　

The code is as follows:

  // Standard inclusions  
include("Application example: PHP generates chart pChart (with source code)_PHP tutorial/pData.class");
include("Application example: PHP generates chart pChart (with source code)_PHP tutorial/Application example: PHP generates chart pChart (with source code)_PHP tutorial.class");

// Dataset definition
$DataSet = new pData;
//图表数据
$DataSet->AddPoint(array(1,4,-3,2,-3,3,2,1,0,7,4),"Serie1");
$DataSet->AddPoint(array(3,3,-4,1,-2,2,1,0,-1,6,3),"Serie2");
$DataSet->AddPoint(array(4,1,2,-1,-4,-2,3,2,1,2,2),"Serie3");
$DataSet->AddAllSeries();
$DataSet->SetAbsciseLabelSerie();
//数据图例
$DataSet->SetSerieName("Microsoft","Serie1");
$DataSet->SetSerieName("IBM","Serie2");
$DataSet->SetSerieName("Google","Serie3");

// Initialise the graph
$Test = new Application example: PHP generates chart pChart (with source code)_PHP tutorial(700,230);
//设置图表尺寸、样式
$Test->setFontProperties("Fonts/tahoma.ttf",8);
$Test->setGraphArea(50,30,680,200);
$Test->drawFilledRoundedRectangle(7,7,693,223,5,240,240,240);
$Test->drawRoundedRectangle(5,5,695,225,5,230,230,230);
$Test->drawGraphArea(255,255,255,TRUE);
$Test->drawScale($DataSet->GetData(),$DataSet->GetDataDescription(),SCALE_NORMAL,150,150,150,TRUE,0,2,TRUE);
$Test->drawGrid(4,TRUE,230,230,230,50);

// Draw the 0 line
$Test->setFontProperties("Fonts/MankSans.ttf",6);
$Test->drawTreshold(0,143,55,72,TRUE,TRUE);

// Draw the bar graph
//柱状图要使用drawBarGraph()
$Test->drawBarGraph($DataSet->GetData(),$DataSet->GetDataDescription(),TRUE,80);


// Finish the graph
//制作图例、标题、字体等属性
$Test->setFontProperties("Fonts/MankSans.ttf",10);
$Test->drawLegend(596,150,$DataSet->GetDataDescription(),255,255,255);
$Test->setFontProperties("Fonts/MankSans.ttf",10);
$Test->drawTitle(50,22,"Example",50,50,50,585);

//生成图表
$imageFile = "example12.png";
$Test->Render($imageFile);
echo '';
?>

// Standard inclusions
include("Application example: PHP generates chart pChart (with source code)_PHP tutorial/pData.class");
include("Application example: PHP generates chart pChart (with source code)_PHP tutorial/Application example: PHP generates chart pChart (with source code)_PHP tutorial.class");

// Dataset definition
$DataSet = new pData;
//Chart data
$DataSet->AddPoint(array(1,4,-3,2,-3,3,2,1,0,7,4),"Serie1");
$DataSet->AddPoint(array(3,3,-4,1,-2,2,1,0,-1,6,3),"Serie2");
$DataSet->AddPoint(array(4,1,2,-1,-4,-2,3,2,1,2,2),"Serie3");
$DataSet->AddAllSeries();
$DataSet->SetAbsciseLabelSerie();
//Data legend
$DataSet->SetSerieName("Microsoft","Serie1");
$DataSet->SetSerieName("IBM","Serie2");
$DataSet->SetSerieName("Google","Serie3");

// Initialize the graph
$Test = new Application example: PHP generates chart pChart (with source code)_PHP tutorial(700,230);
//Set chart size and style
$Test->setFontProperties("Fonts/tahoma.ttf",8);
$Test->setGraphArea(50,30,680,200);
$Test->drawFilledRoundedRectangle(7,7,693,223,5,240,240,240);
$Test->drawRoundedRectangle(5,5,695,225,5,230,230,230);
$Test->drawGraphArea(255,255,255,TRUE);
$Test->drawScale($DataSet->GetData(),$DataSet->GetDataDescription(),SCALE_NORMAL,150,150,150,TRUE,0,2,TRUE);
$Test->drawGrid(4,TRUE,230,230,230,50);

// Draw the 0 line
$Test->setFontProperties("Fonts/MankSans.ttf",6);
$Test->drawTreshold(0,143,55,72,TRUE,TRUE);

// Draw the bar graph
//For bar charts, use drawBarGraph()
$Test->drawBarGraph($DataSet->GetData(),$DataSet->GetDataDescription(),TRUE,80);


// Finish the graph
//Make legend, title, font and other attributes
$Test->setFontProperties("Fonts/MankSans.ttf",10);
$Test->drawLegend(596,150,$DataSet->GetDataDescription(),255,255,255);
$Test->setFontProperties("Fonts/MankSans.ttf",10);
$Test->drawTitle(50,22,"Example",50,50,50,585);

//Generate chart
$imageFile = "example12.png";
$Test->Render($imageFile);
echo '';
?>

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