jpgraph generates type data and displays it in the form of charts and trend charts_PHP tutorial

/**
* ecshop jpgraph chart library
* ================================================= =============
* Use the open source jpgraph library to display various types of data in the form of charts and trend charts.
* ================================================= =============
**/

class cls_jpgraph
{
var $db = null;
var $ydata = array();
var $width = 350;
var $height = 250;

var $graph = ''; //Graphic object
var $piegraph = ''; //Piegraph graph

var $lineplot = ''; //Linear object
var $barpot = ''; //Bar object
var $gbplat = ''; //Column group object
var $txt = ''; //Text object
var $p1 = ''; //Program object

var $scale = ''; //Chart type? (textlin, textlog, intlin)
var $yscale = ''; // (log,)
var $xgrid = false; //x-axis grid display
var $ygrid = false; //Y-axis grid display
var $title = ''; //Title
var $subtitle = ''; //Subtitle (usually date)
var $xaxis = ''; //x-axis name
var $yaxis = ''; //y-axis name

/*margin position*/
var $left = 0;
var $right = 0;
var $top = 0;
var $bottom = 0;

/**
*Constructor
​*/
function cls_jpgraph($width=350,$height=250)
{
$this->width = $width;
$this->height = $height;

$this->graph = new graph($this->width,$this->height);

}

/**
*Constructor of chart class library
*
​*/
/*
function __construct($parms,$width,$height)
{
cls_jpgraph($parms,$width,$height);
}
*/

/*Basic picture information settings*/
function set_jpgraph($scale='intlin',$title='',$subtitle='',$bgcolor='',$xaxis='',
                   $yaxis='',$xgrid=false,$ygrid=false,$margin='') {

$this->scale = $scale;
$this->title = $title;
$this->subtitle = $subtitle;
$this->xaxis = $xaxis;
$this->yaxis = $yaxis;
$this->xgrid = $xgrid;
$this->ygrid = $ygrid;

if(!empty($scale)) {
$this->graph->setscale($this->scale);
}
else {
$this->graph->setscale('intlin');
}
$this->graph->xgrid->show($this->xgrid,$this->xgrid);
$this->graph->ygrid->show($this->ygrid,$this->ygrid);

if(!empty($bgcolor)) {
$this->graph->setmargincolor($bgcolor);
}

/*If the image position is set manually*/
if(is_array($margin)) {
while(list($key,$val) = each($margin)) {
$this->$key = $val;
}
$this->graph->setmargin($this->left,$this->right,$this->top,$this->bottom);
}

if(!empty($this->title)) {
$this->graph->title->set($this->title);
}
if(!empty($this->subtitle)) {
$this->graph->subtitle->set($this->subtitle);
}
else {
$this->graph->subtitle->set('('.date('y-m-d').')'); //The default subtitle is set to the current date
}
if(!empty($this->xaxis)) {
$this->graph->xaxis->title->set($this->xaxis);
}
if(!empty($this->yaxis)) {
$this->graph->yaxis->title->set($this->yaxis);
}

}

 /*创建线性关系图表(linear plot)*/
 function create_lineplot($parms,$color='black',$weight=1)
 {
  $this->ydata = $parms;
  $this->lineplot = new lineplot($this->ydata);
  $this->lineplot->setcolor($color);
  $this->lineplot->setweight($weight);

  return $this->lineplot;
 }

 /*创建柱状图表(bar pot)*/
 function create_barpot($parms,$color='black',$width='0')
 {
  $this->ydata = $parms;
  $this->barpot = new barplot($this->ydata);
  $this->barpot->setfillcolor($color);
  if(!empty($width)) {
   $this->barpot->setwidth($width);
  }

  return $this->barpot;
 }

 /*创建数据柱状图表组*/
 function create_bargroup($plotarr,$width='0.8')
 {
  $this->gbplot = new groupbarplot($plotarr);
  $this->gbplot->setwidth($width);

  return $this->gbplot;
 }

 /*创建文本内容*/
 function create_text($str,$postion='',$color='black')
 {
  $this->txt = new text($str);

  if(is_array($postion)) {
   while(list($key,$val) = each($postion)) {
    $this->$key = $val;
   }
   $this->txt->setpos($this->left,$this->top);
  }
  else {
   $this->txt->setpos(10,20);
  }
  $this->txt->setcolor($color);

  $this->graph->add($this->txt);
 }

 /*创建丙状图表*/
 function create_pie($parms,$title,$type='3d',$size='0.5',$center='0.5',$width='350',$height='250')
 {
  $this->width = $width;
  $this->height = $height;

  $this->piegraph = new piegraph(300,200);
  $this->piegraph->setshadow();

  $this->piegraph->title->set($title);

  if('3d' != $type) {
   $this->p1 = new pieplot($parms);
   $this->piegraph->add($this->p1);
  }
  else {
   $this->p1 = new pieplot3d($parms);
   $this->p1->setsize($size);
   $this->p1->setcenter($center);
//   $this->p1->setlegends($gdatelocale->getshortmonth());
   $this->piegraph->add($this->p1);
  }
  $this->piegraph->stroke();
 }

 function get_auth_code($length=4)
 {
  $spam = new antispam();
  $chars = $spam->rand($length);

  if( $spam->stroke() === false ) {
   return false;
  }

  return $chars;
 }

 /*完成图形创建并显示*/
 function display($obj)
 {
  $this->graph->add($obj);
  $this->graph->stroke();
 }
}

?>

http://www.bkjia.com/PHPjc/633013.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/633013.htmlTechArticle?php教程 /** * ecshop jpgraph图表类库 * ============================================================== * 利用开源的jpgraph库实现对各类型数据以图表，走势图的...