<?
ini_set('display_errors',1);
error_reporting(E_ALL);


class watermark1
{
  function create_watermark( $main_img_obj, $text, $font, $r = 128, $g = 128, $b = 128, $alpha_level = 100 )
  {
   $width = imagesx($main_img_obj);
   $height = imagesy($main_img_obj);
   $angle =  rad2deg(atan2(($height),($width)));

   $c = imagecolorallocatealpha($main_img_obj, $r, $g, $b, $alpha_level);
   $size = (($width+$height)/2)*2/strlen($text);
   $box  = imagettfbbox ( $size, $angle, $font, $text );
   $x = $width/2 - abs($box[4] - $box[0])/2;
   $y = $height/2 + abs($box[5] - $box[1])/2;

   imagettftext($main_img_obj,$size ,$angle, $x, $y, $c, $font, $text);
   return $main_img_obj;
  }
}
$original = urldecode($_SERVER['DOCUMENT_ROOT'].$_SERVER['REQUEST_URI']);
$watermark = new watermark1();
$img = imagecreatefromjpeg($original);
$info_o = @getImageSize($original);
$txt = 'www.kartina.ru';

$im=$watermark->create_watermark($img,$txt,"a.ttf",0,0,255,100);
$out = imageCreateTrueColor($info_o[0],$info_o[1]);

imageCopy($out, $im, 0, 0, 0, 0, $info_o[0], $info_o[1]);

header("Content-Type: image/jpeg");
imagejpeg($out);

imageDestroy($im);
imageDestroy($out);
?>