<? 

//IMAGE STUFF
$imagewidth = 400; //overall width of image 
$imageheight = 300; //overall height of image
$background_r = 240; //red value of background (0-255)
$background_g = 240; //green value of background (0-255)
$background_b = 240; //blue value of background (0-255)

//ROWS OF COLORED BOXES 
$height = 10; //height of colored boxes 
$offset = 1; //spacing of things (1 or higher) 
$minboxwidthhalf = 1; //mininum box width, each randomly determined
$maxboxwidthhalf = 10; //max box width, each randomly determined
$randomheight = 0;
$minheighthalf = 3;
$maxheighthalf = 25;

// this gets an even number
$minheight = 2 * $minheighthalf;
$maxheight = 2 * $maxheighthalf;
$minboxwidth = 2 * $minboxwidthhalf ; 
$maxboxwidth = 2 * $maxboxwidthhalf ; 

// BOX ITERATIONS 
$break = 40; //may need increasing if image width is high
$breaksub = 25;

$startx = 0; 
$starty = ($imageheight/2) - (($breaksub * 2)/2); 
$image = imageCreate($imagewidth,$imageheight);//creates image

$defaultbackground = ImageColorAllocate ($image, $background_r, $background_g, $background_b); //creates bground image

$tone = 120;
$tonedepth = 20;
$margin = 1;
$widf = rand(1,30);
$separation = $margin + $widf;
$background= 0; 
$gutter= 50;
$xbgr = $gutter;
$ybgr =$gutter;
while($background<=60){
if ($background==60){break;}
$widf = rand(1,30);
$color4r = $tone - rand(-$tonedepth,$tonedepth);
$color4g = $tone - rand(-$tonedepth,$tonedepth);
$color4b = $tone - rand(-$tonedepth,$tonedepth);
$color4 = ImageColorAllocate ($image, $color4r, $color4g, $color4b);
$color3 = ImageColorAllocate ($image,$color4r + 20, $color4g + 20, $color4g + 20);
$color5 = ImageColorAllocate ($image,$color4r + 40, $color4g + 40, $color4g + 40);
$ynew = $ybgr + rand(-.5*$widf,.5*$widf);
$xnew = $xbgr + rand(-.5*$widf,.5*$widf);
ImageFilledRectangle($image, $xnew, $ynew, $xbgr + $widf, $ybgr+$widf, $color4);

$repeater = 0;
$repeatnums = rand(1,25);
while ($repeater<=$repeatnums){
if ($repeater == $repeatnums){break;}
imageline ( $image, $xnew+$repeater, $ynew -$repeater, $xbgr + $widf+$repeater, $ynew -$repeater, $color3);
imageline ( $image, $xbgr + $widf+$repeater, $ynew -$repeater, $xbgr + $widf+$repeater, $ybgr+$widf-$repeater, $color5);
$repeater++;
}
$xbgr = $xbgr + $separation; 
$ybgr = $ybgr + rand(-10,10); 
if ($xbgr >= $imagewidth-$gutter-25){$ybgr=$ybgr + $separation;} 
if ($xbgr >= $imagewidth-$gutter){$xbgr = $gutter;} 
if ($ybgr >= $imageheight -$gutter){break;} 
if ($ybgr <= 0){$ybgr = $gutter;}
$background++;
}

//OUTPUT JPEG
header('Content-Type: image/png');
ImagePNG($image);
?>