// set image quality (from 0 to 100, not applicable to gif) $imgquality = 100;

// get data from $_POST or $_GET ? $data = &$_POST;

// get image dimensions $width = (int) $data['width']; $height = (int) $data['height'];

// create image object $img = imagecreatetruecolor($width, $height);

// populate image with pixels for ($y = 0; $y < $height; $y++) { // innitialize $x = 0;

// get row data $row = explode(',', $data['r'.$y]);

// place row pixels $cnt = sizeof($row); for ($r = 0; $r < $cnt; $r++) { // get pixel(s) data $pixel = explode(':', $row[$r]);

// get color 
$pixel[0] = str_pad($pixel[0], 6, '0', STR_PAD_LEFT); 
$cr = hexdec(substr($pixel[0], 0, 2)); 
$cg = hexdec(substr($pixel[0], 2, 2)); 
$cb = hexdec(substr($pixel[0], 4, 2)); 

// allocate color 
$color = imagecolorallocate($img, $cr, $cg, $cb); 

// place repeating pixels 
$repeat = isset($pixel[1]) ? (int) $pixel[1] : 1; 
for ($c = 0; $c < $repeat; $c++) { 
  // place pixel 
  imagesetpixel($img, $x, $y, $color); 

  // iterate column 
  $x++; 
} 

} }

// set proper content type header('Content-type: image/'.$imgtype); header('Content-Disposition: attachment; filename="chart.'.$imgtype.'"');

// stream image $function = 'image'.$imgtype; if ($imgtype == 'gif') { $function($img); } else { $function($img, null, $imgquality); }

// destroy imagedestroy($img); ?>