<? function OutThumb($src, $w, $h){
   $size = getimagesize($src);
   if( $size[2] == 2 ){$im = @imagecreatefromjpeg($src);}
   elseif( $size[2] == 1 ){$im = @imagecreatefromgif($src);}
   elseif( $size[2] == 3 ){$im = @imagecreatefrompng($src);}

   $newwidth = $size[0];
   $newheight = $size[1];

   if( $newwidth > $w ){
     $newheight = ($w / $newwidth) * $newheight;
     $newwidth = $w;
   }
   if( $newheight > $h ){
     $newwidth = ($h / $newheight) * $newwidth;
     $newheight = $h;
   }

   if(  ($size[2] != 3) ){
     $new = imagecreatetruecolor($newwidth, $newheight);
     imagecopyresampled($new, $im, 0, 0, 0, 0, $newwidth, $newheight, $size[0], $size[1]);
   }
   else{
     $new = imagecreate($newwidth, $newheight);
     imagecopyresized($new, $im, 0, 0, 0, 0, $newwidth, $newheight, $size[0], $size[1]);
    }
   header('Content-Type: ' . $size['mime']);
   if( $size[2] == 2 ){@imagejpeg($new, '', 100);}
   elseif( $size[2] == 1 ){@imagegif($new);}
   elseif( $size[2] == 3 ){@imagepng($new);}
   @imagedestroy($im);
   @imagedestroy($new);
 }
?>
<?  OutThumb($name, $larghezza,$altezza);?>