<?php


       
        /*
            COULD BE ANY DATA SET.  THE ONLY THING REQUIRED BY THE
             GRAPH IS A SET OF Y-VALUES

            THIS RETURNS TRAFFIC, HITS, DATE
            FOR A GIVEN DATE RANGE.
           
            THE TRAFFIC & HITS WOULD BE Y-AXIS VALUES FOR TWO DIFFERENT GRAPHS
            THE DATES WOULD BE X-AXIS VALUES FOR EITHER GRAPH
        */
    $set = $Bandwidth->getDailyTotalsByDateRange( $start, $end );
   
        /*
            THE WAY IT IS HERE YOU STILL HAVE TO GET THE DATA INTO ARRAYS AND FORMAT YOUR VALUES
        */
    if ( count( $set ) ) {
        $vals = array();
        $vals2 = array();
        $points = array();
        foreach ( $set as $v ) {
            $vals[] = number_format( $v["Traffic"]/1024/1024/1024, 2 );
            $vals2[] = round( $v["Hits"]/1000 );
            $points[] = date( "M jS", strtotime( $v["LDate"] ) );
        }
       
        /*
            BUT ONCE YOU’VE DONE THAT, DRAWING THE GRAPHS IS REALLY SIMPLE
            IF YOU HAVE A URL SET UP TO UNPACK YOUR VALUES, SET THE PARAMETERS
            AND CALL THE GRAPH.  YOU CAN USE THAT ONE URL TO DO ALL THE
            GRAPHS IN A SET, RATHER THAN HAVING TO HAVE A DIFFERENT ONE
            FOR EACH GRAPH.  PACK ALL YOUR VALUES AND PARAMETERS AND
            SET AN IMAGE WITH A SOURCE OF THE ACTUAL GRAPH URL.
        */
       
        $data = $G->packSimple( $vals, $points, 600, 350, 50 );
        echo "
    <p><strong>Traffic Useage Overall in Gigabytes: $start - $end</strong></p>
    <img src=’simpleGraph.php?data=$data’ style=’border: 1px solid #EEF;’ />";
       
        /*
            AND THEN YOU CAN DRAW ANOTHER ONE WITH THE SECOND SET OF Y-AXIS VALUES
            WITHOUT A WHOLE BUNCH OF HYSTERICS, IN THE SAME PAGE, WITH DIFFERENT
            DIMENSIONS IF YOU LIKE, AND YOU’VE ONLY MADE 1 DATABASE CALL FOR BOTH
            GRAPHS.
        */
        $data = $G->packSimple( $vals2, $points, 600, 350, 55 );
        echo "
    <p><strong>Resource Hits Overall in Thousands: $start - $end</strong></p>
    <img src=’simpleGraph.php?data=$data’ style=’border: 1px solid #EEF;’ />";
    }



?>

The page that draws out the graphs:

<?php


   
    include_once( "graph.class.php" );
   
    extract( $G->unpackSimple( $_GET["data"] ) );
    if ( isset( $height ) ) $G->height = $height;
    if ( isset( $width ) ) $G->width = $width;
    if ( isset( $overallPadding ) ) $G->overallPadding = $overallPadding;
   
    $G->drawSimple( $values, $points );
   


?>

<?php



class Graph {

	/*
	  PLEASE EXCUSE THE MESS, THIS IS A ROUGH
	WORKING PROTOTYPE AND I HADN’T CLEANED IT UP YET,
	JUST WANTED TO GET SOME GRAPHING GOING
	*/

	var $width = 600;
	var $height = 350;
	var $padding = 3;
	var $overallPadding = 45;
	var $fontDir = "/path/to/fonts/";
	var $font = "Arial-12.gdf"; // this could be changed in code below to just be an int if you don’t want to go find the gd font
	
	
	function packSimple( $values, $points=false, $w=false, $h=false, $op=false ) {
		$toPack = array();
		$toPack[] = "values=".implode( ",", $values );
		if ( $points ) $toPack[] = "points=".implode( ",", $points );
		if ( $w ) $toPack[] = "width=$w";
		if ( $h ) $toPack[] = "height=$h";
		if ( $op ) $toPack[] = "overallPadding=$op";
		
		return urlencode( base64_encode( gzdeflate( implode( "&", $toPack ) ) ) );
	}
	
	function unpackSimple( $str ) {
		$data = gzinflate( base64_decode( $str ) );
		$pairs = split( "&", $data );
		$r = array();
		foreach ( $pairs as $pair ) {
			$pair = split( "=", $pair );
			$r[$pair[0]] = $pair[1];
		}
		return $r;
	}
	
	function drawSimple( $values, $points=false ) {
		
		$values = split( ",", $values );
		
    $columns  = count($values);
//     $width = $this->width;
//     $height = $this->height;
    $padding = $this->padding;
    $column_width = ( $this->width-$this->overallPadding*2 ) / $columns ;

// Generate the image variables

    $im        = imagecreatetruecolor($this->width,$this->height);
    $font 		 = imageloadfont( $this->fontDir.$this->font );
    $pearl 		 = imagecolorallocate ($im,0xfc,0xfc,0xfa);
    $gray      = imagecolorallocate ($im,0xcc,0xcc,0xcc);
    $blue_gray = imagecolorallocate ($im,0xcc,0xcc,0xff);
    $gray_lite = imagecolorallocate ($im,0xee,0xee,0xee);
    $gray_dark = imagecolorallocate ($im,0x7f,0x7f,0x7f);
    $white     = imagecolorallocate ($im,0xff,0xff,0xff);
    
// Fill in the background of the image

    imagefilledrectangle($im,0,0,$this->width,$this->height,$pearl);
//     imagestring($im,$font,4,4,$columns." values",$gray_dark);
//     imagestring($im,$font,4,14,$values[0]." -> ".$values[count( $values )-1],$gray_dark);
    
    
    $maxv = max( $values );
		
		
    	//////////////////////////////////////
			//	DO SIDEBARS
		$op = $this->overallPadding-5;
		imageline( $im, $op,$op,$op,$this->height-$op,$gray_dark );
		imageline( $im, $op,$this->height-$op,$this->width-$op,$this->height-$op,$gray_dark );
		
			// top int
		imageline( $im, $op-5,$op,$this->width-$op,$op, $gray_dark );
		imagestring( $im,$font, 5,$op-5, number_format( $maxv, 2 ), $gray_dark );
			// 3/4
		$tq = (($this->height-$this->overallPadding*2)*.25)+$this->overallPadding;
		imageline( $im, $op,$tq,$this->width-$op,$tq, $gray_dark );
			// mid int
		imageline( $im, $op-5,$this->height/2,$this->width-$op,$this->height/2, $gray_dark );
		imagestring( $im,$font, 5,$this->height/2-5, number_format( $maxv/2, 2 ), $gray_dark );
			// 1/4
		$tq = (($this->height-$this->overallPadding*2)*.75)+$this->overallPadding;
		imageline( $im, $op,$tq,$this->width-$op,$tq, $gray_dark );
			// 0
		imageline( $im, $op-5,$this->height-$op,$op,$this->height-$op, $gray_dark );
		imagestring( $im,$font, 5,$this->height-$op-5, 0, $gray_dark );
		
			///////////////////////////////////
			// Now plot each column
    
    for($i=0;$i<$columns;$i++)
    {
//         $column_height = ($this->height / 100) * (( $values[$i] / $maxv) *100);
				
				$column_height = round(($values[$i]/$maxv)*($this->height-($this->overallPadding*2)));

        $x1 = $i*$column_width+$this->overallPadding;
        $y1 = $this->height-$column_height-$this->overallPadding;
        $x2 = (($i+1)*$column_width+$this->overallPadding)-$padding;
        $y2 = $this->height-$this->overallPadding;

        imagefilledrectangle($im,$x1,$y1,$x2,$y2,$blue_gray);
        imagestringup($im,$font,$x1+1,$y1+strlen( number_format( $values[$i], 2 ) )*6,number_format( $values[$i], 2 ),$gray_dark);
        // de-bug string per column:

					// This part is just for 3D effect
        imageline($im,$x1,$y1,$x1,$y2,$gray_lite);
        imageline($im,$x1,$y2,$x2,$y2,$gray_lite);
        imageline($im,$x2,$y1,$x2,$y2-1,$gray_dark);

    }
    
    if ( $points ) {
    	$points = split( ",", $points );
    	$py = $this->height-$op+5;
				// X-Axis Points, selected
			imagestring( $im, $font, $op, $py, $points[0], $gray_dark );
			imagestring( $im, $font, $this->width-$op-strlen( $points[count( $points )-1] )*6,$py, $points[count( $points )-1], $gray_dark );
			
			$onethird = round( count( $points )/3 );
			imagestring( $im, $font, $this->width*.30,$py, $points[$onethird], $gray_dark );
			$twothird = round( count( $points )*.6 );
			imagestring( $im, $font, $this->width*.60,$py, $points[$twothird], $gray_dark );
		}

			// Send the PNG header information. Replace for JPEG or GIF or whatever
    header ("Content-type: image/png");
    imagepng($im);
    imagedestroy($im);
	}
	
	
}

$G = new Graph();



?>