File: class.SDDinamicChart.php

<?php 
/*------------------------------------------------------------------
| 
| Class SDDinamicChart
| Powered by www.SexDev.com
| 
| 
| Example: 
| <?php
| 	$items = array(
| 			'Product1' => '100',
| 			'Product2' => '200',
| 			'Product3' => '300',
| 			'Product4' => '400',
| 			'Product5' => '500'
| 			);
| 	$dc = new SDDinamicChart();
| 	$dc->sortby = SORT_DESC;
| 	$dc->drawStats($items);
| ?>
------------------------------------------------------------------*/

class SDDinamicChart {
	var $width = 600;
	var $sortby = SORT_ASC;
	var $title = 'Statistic Report';
	
	//start positions of graph   
	var $x = 40;   
	var $y = 30;   

	//right margin   
	var $right_margin= 20;   

	var $bar_width = 8;  
	
	//colors
	var $def_graph_font_color = '255,255,255';   
	var $def_graph_percent_font_color = '255,204,0'; 
	var $def_graph_date_font_color = '0,255,255';
	var $def_graph_bgcolor = '0,64,128';   
	var $def_graph_bar_bgcolor = '0,0,255';

		function drawStats($items = ''){
				global $HTTP_GET_VARS;
				if(!is_array($items))
					$items = $HTTP_GET_VARS;

				Array_multisort($items,$this->sortby);

				$total = 0;   
				$max = 0;   

				$unit = (($this->width-$this->x)-$this->right_margin) / 100;   

				//$items= explode( "^^",$data);   

				//calculate total 
				foreach($items as $key => $item) {
					  if ($item != ''){   
						 //$pos = strlen($key);
						 $value = $item; 
						 $total = $total + $item;   
					  }   
				}   
				//echo $total; exit;
				//var_dump($items);
				reset($items);   

				//calculate height of graph   
				$height = (sizeof($items) + 1) * ($this->bar_width + 20);   

				Header( "Content-type:  image/png");   

				$im = imagecreate($this->width,$height);   

				// Allocate colors   
				$graph_font_color=ImageColorAllocate($im,255,255,255);   
				$graph_percent_font_color=ImageColorAllocate($im,255,204,0); 
				$graph_date_font_color = ImageColorAllocate($im,0,255,255);
				$graph_bgcolor=ImageColorAllocate($im,0,64,128);   
				$graph_bar_bgcolor=ImageColorAllocate($im,0,0,255);   

				//background   
				ImageFilledRectangle($im,0,0,$this->width,$height,$graph_bgcolor);   

				//title   
				$title_x = (imagesx($im)-7.5*strlen($this->title))/2;   
				ImageString($im,3,$title_x,4,$this->title,$graph_font_color);   

				//date   
				ImageString($im,1,$this->width-285,17,'Generated by SexDev.com '.date("D M jS Y h:i:s A"),$graph_date_font_color);   

				//line   
				Imageline($im,$this->x,$this->y-5,$this->x,$height-15,$graph_bar_bgcolor);   

				//draw data   
				foreach($items as $key => $item) {   
					  if ($item != ''){   
						 //$pos = strlen($item);   
						 $item_title = $key;   
						 $value = $item;   

						  //display percent   
						 ImageString($im,3,$this->x-25,$this->y-2,intval(round(($value/$total)*100)). "%",$graph_percent_font_color);   

						  //value right side rectangle   
						 $px = $this->x + ( intval(round(($value/$total)*100)) * $unit);   

						  //draw rectangle value   
						 ImageFilledRectangle($im,$this->x,$this->y-2,$px,$this->y+$this->bar_width,$graph_bar_bgcolor);   

						  //draw item title   
						 ImageString($im,2,$this->x+5,$this->y+9,$item_title,$graph_font_color);   

						  //draw empty rectangle   
						 ImageRectangle($im,$px+1,$this->y-2,($this->x+(100*$unit)),$this->y+$this->bar_width,$graph_bar_bgcolor);   

						  //display numbers   
						 ImageString($im,1,($this->x+(100*$unit))-40,$this->y+12,$value. "/".$total,$graph_font_color);   

						 }   
					  $this->y += $this->bar_width+20;   
					  }   

				// Display modified image   
				ImagePng($im);   

				// Release allocated ressources   
				ImageDestroy($im); 
		}
}
?>