quick graph based off of an array

gistfile1.php

	public function graph($data){

		// Get the total number of columns we are going to plot

		    $columns  = count($data);

		// Get the height and width of the final image

		    $width = 300;
		    $height = 200;

		// Set the amount of space between each column

		    $padding = 5;

		// Get the width of 1 column

		    $column_width = $width / $columns ;

		// Generate the image variables

		    $im        = imagecreate($width,$height);
		    $gray      = imagecolorallocate ($im,0xcc,0xcc,0xcc);
		    $gray_lite = imagecolorallocate ($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($im,0,0,$width,$height,$white);

		    $maxv = 0;

		// Calculate the maximum value we are going to plot

		    for($i=0;$i<$columns;$i++)$maxv = max($values[$i],$maxv);

		// Now plot each column

		    for($i=0;$i<$columns;$i++)
		    {
		        $column_height = ($height / 100) * (( $values[$i] / $maxv) *100);

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

		        imagefilledrectangle($im,$x1,$y1,$x2,$y2,$gray);

		// 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,$y2,$gray_dark);

		    }

		// Send the PNG header information. Replace for JPEG or GIF or whatever

		    header ("Content-type: image/png");
		    imagepng($im);
		
	}