watermark

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 public function watermark($file, $position = 'bottomright') {
        //$watermark = $this->create($file);
		$watermark = imagecreatefrompng($file);
        
        $watermark_width = imagesx($watermark);
        $watermark_height = imagesy($watermark);
        
        switch($position) {
            case 'topleft':
                $watermark_pos_x = 0;
                $watermark_pos_y = 0;
                break;
            case 'topright':
                $watermark_pos_x = (($this->info['width']) * 0.2);
                $watermark_pos_y = $this->info['height'] * 0.2;
                break;
            case 'bottomleft':
                $watermark_pos_x = 0;
                $watermark_pos_y = $this->info['height'] - $watermark_height;
                break;
            case 'bottomright':
                $watermark_pos_x = $this->info['width'] - $watermark_width;
                $watermark_pos_y = $this->info['height'] - $watermark_height;
                break;
        }

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public function watermark($file, $position = 'bottomright') {
        //$watermark = $this->create($file);
		$watermark = imagecreatefrompng($file);
        
        $watermark_width = imagesx($watermark);
        $watermark_height = imagesy($watermark);
        
        switch($position) {
            case 'topleft':
                $watermark_pos_x = 0;
                $watermark_pos_y = 0;
                break;
            case 'topright':
                $watermark_pos_x = (($this->info['width']) * 0.2);
                $watermark_pos_y = $this->info['height'] * 0.2;
                break;
            case 'bottomleft':
                $watermark_pos_x = 0;
                $watermark_pos_y = $this->info['height'] - $watermark_height;
                break;
            case 'bottomright':
                $watermark_pos_x = $this->info['width'] - $watermark_width;
                $watermark_pos_y = $this->info['height'] - $watermark_height;
                break;
	     case 'center': 
               $watermark_pos_x = ($this->info['width']- $watermark_width)/2;
               $watermark_pos_y = ($this->info['height']- $watermark_height)/2;
				break;
        }

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$image->watermark(HTTP_IMAGE . 'watermark.png', 'bootomright');

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$image->watermark(HTTP_IMAGE . 'watermark.png', 'center');

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public function watermark($file, $position = 'bottomright') {
        $watermark = $this->create($file);
        
        $watermark_width = imagesx($watermark);
        $watermark_height = imagesy($watermark);
        
        switch($position) {
            case 'topleft':
                $watermark_pos_x = 0;
                $watermark_pos_y = 0;
                break;
            case 'topright':
                $watermark_pos_x = $this->info['width'] - $watermark_width;
                $watermark_pos_y = 0;
                break;
            case 'bottomleft':
                $watermark_pos_x = 0;
                $watermark_pos_y = $this->info['height'] - $watermark_height;
                break;
            case 'bottomright':
                $watermark_pos_x = $this->info['width'] - $watermark_width;
                $watermark_pos_y = $this->info['height'] - $watermark_height;
                break;
        }
        
        imagecopy($this->image, $watermark, $watermark_pos_x, $watermark_pos_y, 0, 0, 120, 40);
        
        imagedestroy($watermark);
    }

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public function watermark($file, $position = 'bottomright') {
   
   //Pb ! you don't work on the true object => you must modify the "create" method ($mime = $this->info['mime']; it's work only if we have the same image format !
        //$watermark = $this->create($file);

        //Prefer PNG files => it's not optimized but it's work
   $watermark = imagecreatefrompng($file);
        
        $watermark_width  = imagesx($watermark);
        $watermark_height = imagesy($watermark);

        switch($position) {
            case 'topleft':
                $watermark_pos_x = 0;
                $watermark_pos_y = 0;
                break;
            case 'topright':
                $watermark_pos_x = $this->info['width'] - $watermark_width;
                $watermark_pos_y = 0;
                break;
            case 'bottomleft':
                $watermark_pos_x = 0;
                $watermark_pos_y = $this->info['height'] - $watermark_height;
                break;
            case 'bottomright':
                $watermark_pos_x = $this->info['width'] - $watermark_width;
                $watermark_pos_y = $this->info['height'] - $watermark_height;
                break;
			case 'center': 
				$watermark_pos_x = ($this->info['width']- $watermark_width)/2;
				$watermark_pos_y = ($this->info['height']- $watermark_height)/2;
				break;
        }
       
        imagecopy($this->image, $watermark, $watermark_pos_x, $watermark_pos_y, 0, 0, $watermark_width, $watermark_height);
        
        imagedestroy($watermark);
    }

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$image = new Image(DIR_IMAGE . $old_image);

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if ($width > 400 || $height > 300) {	
	$image->watermark(DIR_IMAGE . 'watermark.png', 'center'); 
}

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if ($width > 400 || $height > 300) {   
$image->watermark(DIR_IMAGE . 'watermark.png', 'center');    
}

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$image->watermark(DIR_IMAGE . 'watermark.png', 'center'); 

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if ($extension == 'jpeg' || $extension == 'jpg') {

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$width = imagesx($this->image);
$height = imagesy($this->image);
$statement = 'Copyright to www.yourwebsite.com';
$fontsize = 2;
foreach (range($fontsize, 1) as $_fontsize) {
	$fontw = imagefontwidth($_fontsize);
	$fullw = strlen($statement) * $fontw;
	if ($fullw + 4 <= $width) {
		break;
	}
}
$fonth = imagefontheight($_fontsize);
$black = imagecolorallocate($this->image, 0, 0, 0);
$gray = imagecolorallocate($this->image, 200, 200, 200);
$white = imagecolorallocate($this->image, 255, 255, 255);

// imagefilledrectangle($this->image, // The graphics object to draw on
	// $width - $fullw - 4,  // The X value of upper left corner
	// $height - $fonth - 4, // The Y value of upper left corner
	// $width,               // The X value of lower right corner
	// $height,              // The Y value of lower right corner
	// $gray);              // The color

imagestring($this->image, // The graphics object to draw on
	$fontsize,            // The font size to use.
	$width - $fullw - 2,  // X value of upper left corner
	$height - $fonth - 2, // Y value of upper left corner
	$statement,           // The text to print
	$gray);              // The color to do it with.

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      $fontfile = '/path-of-your-font/yourfont.TTF';
		$rotation = 30;
		$width = imagesx($this->image);
		$height = imagesy($this->image);
		$statement = 'Copyright by.......;
		if ($width > 500) {
			$fontsize = 50;
		} else if ($width > 200) {
			$fontsize = 15;
		} else if ($width > 50) {
			$fontsize = 8;
		} else {
			$fontsize = 0;
		}

		if ($fontsize>0) {

			//imagealphablending($this->image, true);
			//imagesavealpha($this->image, true);
			$wmColor = imagecolorallocatealpha($this->image, 150, 150, 150, 90);
			$wmDim = imagettfbbox  ( $fontsize, $rotation, $fontfile , $statement );

			imagettftext( $this->image  , $fontsize, $rotation, ($width - $wmDim[2])/2, ($height - $wmDim[3])/2 , $wmColor, '/path-of-your-font/yourfont.TTF'  , $statement  );