<?
// Welcome to "Club of the developers PHP"
// http://phpclub.unet.ru/index_e.php3
?>
<?php
/**************************************************************************/
/* you must supply to this script 3 parameters : title,width and data. */
/* - title is the title of the graph */
/* - width is the width of the generated graph */
/* - data is used for the values to be displayed */
/* to split the data you have to use separators "^" and "^^" */
/* -> item_title^value^^ */
/* ---------------------------------------------------------------------- */
/* call this script directly in the browser or in your html page with the */
/* img tag. */
/* example 1 : */
/* graph.php3?title=foo&width=500&data=a^15^^b^20^^ */
/* example 2 : */
/* <html> */
/* ... */
/* <img src="graph.php3?title=foo&width=500&data=a^15^^b^20^^"> */
/* ... */
/* </html> */
/* ---------------------------------------------------------------------- */
/* you can use as many data items as you want */
/* you need the GD library in your php module */
/* don't forget to encode you parameters (unicode) */
/* Steve Maranda steve_maranda@teluq.uquebec.ca */
/* Have fun ! */
//title
$title = urldecode($title);
//data
$data = urldecode($data);
//start positions of graph
$x = 40;
$y = 30;
//right margin
$right_margin= 20;
$bar_width = 10;
$total = 0;
$max = 0;
$unit = (($width-$x)-$right_margin) / 100;
$items= explode( "^^",$data);
//calculate total
while (list($key,$item) = each($items))
{
if ($item)
{
$pos = strpos($item, "^");
$value = substr($item,$pos+1,strlen($item));
$total = $total + $value;
}
}
reset($items);
//calculate height of graph
$height = sizeof($items) * ($bar_width + 20);
Header( "Content-type: image/png");
$im = imagecreate($width,$height);
// Allocate colors
$white=ImageColorAllocate($im,255,255,255);
$yellow=ImageColorAllocate($im,240,240,70);
$blue=ImageColorAllocate($im,0,64,128);
$bar=ImageColorAllocate($im,64,100,168);
//background
ImageFilledRectangle($im,0,0,$width,$height,$blue);
//title
$title_x = (imagesx($im)-7.5*strlen($title))/2;
ImageString($im,3,$title_x,4,$title,$white);
//date
//ImageString($im,1,$width-150,17,date("D M jS Y h:i:s A"),$white);
//line
Imageline($im,$x,$y-5,$x,$height-15,$bar);
//draw data
while (list($key,$item) = each($items))
{
if ($item)
{
$pos = strpos($item, "^");
$item_title = substr($item,0,$pos);
$value = substr($item,$pos+1,strlen($item));
//display percent
ImageString($im,3,$x-25,$y-2,intval(round(($value/$total)*100)). "%",$yellow);
//value right side rectangle
$px = $x + ( intval(round(($value/$total)*100)) * $unit);
//draw rectangle value
ImageFilledRectangle($im,$x,$y-2,$px,$y+$bar_width,$bar);
//draw item title
ImageString($im,2,$x+5,$y+9,$item_title,$white);
//draw empty rectangle
ImageRectangle($im,$px+1,$y-2,($x+(100*$unit)),$y+$bar_width,$bar);
//display numbers
ImageString($im,1,($x+(100*$unit))-40,$y+12,$value. "/".$total,$white);
}
$y=$y+($bar_width+20);
}
// Display modified image
ImagePng($im);
// Release allocated ressources
ImageDestroy($im);
?>
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