آموزش افزودن واترمارک خودکار به آپلودسنتر mihalism

$mmhclass->image->create_thumbnail($filename);

$path = "images/";
$mmhclass->image->add_watermark($extension, $path, $filename);

      }
?>

//New function to Add Watermark
        function add_watermark($extension, $path, $filename)
        {
            global $mmhclass;
            $image_upfile = $path.$filename;
 
            if($extension == "jpeg" || $extension == "jpg")
            {
                $watermark = imagecreatefrompng('css/watermark.png');
                imageAlphaBlending($watermark, false);
                imageSaveAlpha($watermark, true);
                $watermark_width = imagesx($watermark);
                $watermark_height = imagesy($watermark);
                $image = imagecreatetruecolor($watermark_width, $watermark_height);
                $image = imagecreatefromjpeg($image_upfile);
                $size = getimagesize($image_upfile);
                $dest_x = $size[0] - $watermark_width - 5;
                $dest_y = $size[1] - $watermark_height - 5;
                imagecopymerge($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, 100);
 
                if(@imagejpeg($image, $image_upfile, 90))
                {
                    $img_watermakred = "yes";
                }
 
                imagedestroy($image);
                imagedestroy($watermark);
            }
 
            if($extension == "png")
            {
                $watermark = imagecreatefrompng('css/watermark.png');
                $watermark_width = imagesx($watermark);
                $watermark_height = imagesy($watermark);
                $image = imagecreatetruecolor($watermark_width, $watermark_height);
                $image = imagecreatefrompng($image_upfile);
                $size = getimagesize($image_upfile);
                $dest_x = $size[0] - $watermark_width - 5;
                $dest_y = $size[1] - $watermark_height - 5;
                imagecopymerge($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, 100);
 
                if(@imagepng($image, $image_upfile))
                {
                    $img_watermakred = "yes";
                }
 
                imagedestroy($image);
                imagedestroy($watermark);
            }
 
            if($extension == "gif")
            {
                $watermark = imagecreatefrompng('css/watermark.png');
                $watermark_width = imagesx($watermark);
                $watermark_height = imagesy($watermark);
                $image = imagecreatetruecolor($watermark_width, $watermark_height);
                $image = imagecreatefromgif($image_upfile);
                $size = getimagesize($image_upfile);
                $dest_x = $size[0] - $watermark_width - 5;
                $dest_y = $size[1] - $watermark_height - 5;
                imagecopymerge($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, 100);  
 
                if(@imagegif($image, $image_upfile))
                {
                    $img_watermakred = "yes";
                }
 
                imagedestroy($image);
                imagedestroy($watermark);
            }
        }