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Image watermarking with image overlay support - Printable Version

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+--- Thread: Image watermarking with image overlay support (/showthread.php?tid=79436)

Image watermarking with image overlay support - MrWhite - 06-15-2021

Currently there is no support for image watermarking with image overlay in image manipulation class. Text overlay is not enough to cover most of the image watermarking needs.

RE: Image watermarking with image overlay support - Avega Soft - 07-06-2021

CI has not special methods for working with watermark  "on the box". But i created self library which works with images and also can create watermarks. For example this is bit of code of a library method for creating watermarks. You can use this code on your project.
PHP Code:
public function watermarkImage( string $file, array $config = [])
    {
        if ($this->_checkFileExists($file, false) && !empty($config))
        {
            if ($this->_checkFileExists($config['wm_image'], false))
            {
                $file = FCPATH . $file;

                $fileType = pathinfo($file,PATHINFO_EXTENSION);

                switch($fileType)
                {
                    case 'png':

                        $img = imagecreatefrompng($file);

                        break;

                    case 'jpg':
                    case 'jpeg':
                    default:

                        $img = imagecreatefromjpeg($file);

                        break;
                }

                $watermark = imagecreatefrompng($config['wm_image']);

                imagealphablending($watermark, false);

                imagesavealpha($watermark, true);

                $img_w = imagesx($img);

                $img_h = imagesy($img);

                $wtrmrk_w = imagesx($watermark);

                $wtrmrk_h = imagesy($watermark);

                $dst_x = ($img_w / 2) - ($wtrmrk_w / 2); // For centering the watermark on any image

                $dst_y = ($img_h / 2) - ($wtrmrk_h / 2); // For centering the watermark on any image

                imagecopy($img, $watermark, $dst_x, $dst_y, 0, 0, $wtrmrk_w, $wtrmrk_h);

                imagejpeg($img, $file, $config['wm_quality'] ?? 90);

                imagedestroy($img);

                imagedestroy($watermark);
            }
        }
    }