Witam. Znalazłem skrypt, który generuje znak wodny jednak w postaci tekstu a nie obrazka. Chciałbym jednak zrobić tak, aby generował się obrazek jako znak wodny. Poniżej kod:

[PHP] pobierz, plaintext 
public function add() {
	App::import('Sanitize');
	$this->pageTitle .= ' - Dodaj';
		if($this->data) {
		$u = $this->Upload;
		$s = $this->Session;
			if(isset($this->data['Post']['cancel1'])) {
			@unlink(WWW_ROOT.'pic/sess/'.$s->read('img').'-1'.$s->read('hash').'.jpg');
			$this->Post->id =(int) $s->read('id');
			$this->Post->delete();
			$s->delete('step2');
			$s->delete('id');
			$s->delete('img');
			$s->delete('hash');
			$this->redirect($this->referer());
			}
			if(isset($this->data['Post']['cancel2'])) {
			@unlink(WWW_ROOT.'pic/sess/'.$s->read('img').'-2'.$s->read('hash').'.jpg');
			$s->del('step2');
			return;
			}
			if((int)$s->read('Auth.User.active')===2) {
			$s->setFlash('Twoje konto jest nieaktywne, potwierdź adres email.');
			$this->redirect($this->referer());
			}
 
			$tag = trim($this->data['Post']['tag']);
			(!empty($tag)) ? $tag = explode(' ',$tag): $tag = null;
 
			if(!$s->check('step2')) {
				if(!$s->check('img')) {
				$u->upload($this->data['Post']['img']);
				} else {
				$u->upload(WWW_ROOT.'pic/sess/'.$s->read('img').'-1'.$s->read('hash').'.jpg');
				}
				if($u->uploaded) {
					if($s->check('img')) {
					$now = $s->read('img');
					} else {
					$now = time();
					}
					if($s->check('hash')) {
					$hash = $s->read('hash');
					} else {
					$hash = $this->Pwd->alphaNumPass();
					$s->write('hash',$hash);
					}
				$title 		= $this->data['Post']['title'];
				$body 		= trim($this->data['Post']['body']);
				$body 		= explode("\n",$body);
				$body[0] 	= trim($body[0]);
				$_size 		= 0;
				$_tsize		= 0;
					if(!isset($body[1])) {
					$_size		+= 19;
					$_tsize		+= 11;
					} elseif((bool)(isset($body[1]) and !isset($body[2]))) {
					$_size += 8;
					}
				$u->file_new_name_body 	= 'img';
				$u->allowed 						= array('image/*');
				$u->image_convert 			= 'png';
				$u->image_resize 				= true;
				$u->image_x 					= 440;
				$u->image_safe_name		= false;
				$u->image_ratio_y 			= true;
				$res = $u->process();
				$img = imagecreatefromstring($res);
				imagejpeg($img,WWW_ROOT.'pic/sess/'.$now.'-1'.$s->read('hash').'.jpg',100);
				imagedestroy($img);
				unset($res);
				$u->allowed 						= array('image/*');
				$u->image_convert 			= 'png';
				$u->image_resize 				= true;
				$u->image_x 					= 436;
				$u->image_ratio_y 			= true;
				$u->image_border_color	= '#FFFFFF';
				$u->image_border 			= '2px 2px 2px 2px';
				$res = $u->process();
					if($u->processed) {
					$img = imagecreatefromstring($res);
					unset($res);
					$height 		= ($u->image_dst_y + 138);
					$bg 				= imagecreatetruecolor(500,$height);
					imagecopy($bg, $img,30,30,0,0,440,$height);
					$black 			= imagecolorallocate($bg,0,0,0);
					$white 			= imagecolorallocate($bg,255,255,255);
					$font 			= WWW_ROOT.'fonts/DejaVuSerif.ttf';
					$bbox 			= imagettfbbox(18,0,$font,$title);
					$x 				= $bbox[0] + (imagesx($bg) / 2) - ($bbox[4] / 2);
					$y 				= ($u->image_dst_y + 58 + $_tsize);
					imagettftext($bg,18,0,$x,$y,$white,$font,$title);
					$bbox 			= imagettfbbox(10,0,$font,$body[0]);
					$x 				= $bbox[0] + (imagesx($bg) / 2) - ($bbox[4] / 2);
					$y 				= ($u->image_dst_y + 78 + $_size);
					imagettftext($bg,10,0,$x,$y,$white,$font,$body[0]);
 
						if(isset($body[1])) {
						$body[1] = trim($body[1]);
						$bbox = imagettfbbox(10,0,$font,$body[1]);
						$x = $bbox[0] + (imagesx($bg) / 2) - ($bbox[4] / 2);
						$y = ($u->image_dst_y + 96 + $_size);
						imagettftext($bg,10,0,$x,$y,$white,$font,$body[1]);
						}
						if(isset($body[2])) {
						$body[2] = trim($body[2]);
						$bbox = imagettfbbox(10,0,$font,$body[2]);
						$x = $bbox[0] + (imagesx($bg) / 2) - ($bbox[4] / 2);
						$y = ($u->image_dst_y + 114);
						imagettftext($bg,10,0,$x,$y,$white,$font,$body[2]);
						}
					$gray = imagecolorallocate($bg,80,80,80);
					$bbox = imagettfbbox(8,0,$font,$_SERVER['HTTP_HOST']);
					$x = $bbox[0] + (imagesx($bg) / 2) - ($bbox[4] / 2);
					$y = ($u->image_dst_y + 134);
					imagettftext($bg,8,0,$x,$y,$gray,$font,$_SERVER['HTTP_HOST']);
					imagejpeg($bg, WWW_ROOT.'pic/sess/'.$now.'-2'.$s->read('hash').'.jpg',100);  
					imagedestroy($img);
					imagedestroy($bg);
						if(!$s->check('id')) {
						$this->Post->create();
						} else {
						$this->Post->id =(int) $s->read('id');
						}
					$this->Post->set('public',2);
					$this->Post->save(array(
												'Post'=>array(
															'id'=>$this->Post->id,
															'user_id'=>$this->Session->read('Auth.User.id'),
															'title'=>Sanitize::html($title),
															'body'=>Sanitize::html($this->data['Post']['body']),
															'img'=>'pic/'.$now.'-'.$hash.'.jpg'),
															'public' => 2
												)
					);
					$s->write('id',$this->Post->id);
					$s->write('step2',true);
					$s->write('img',$now);
					return;
					} else {
					$s->setFlash('Nie można wgrać zdjęcia.');
					return;
					}				
				}
			} else {
			$u->upload(WWW_ROOT.'pic/sess/'.$s->read('img').'-2'.$s->read('hash').'.jpg');
				if($u->uploaded) {
				$u->image_convert 			= 'jpg';
				$u->jpeg_quality				= 100;
				$u->file_safe_name    		= false;
				$u->file_new_name_body 	= $s->read('img').'-'.$s->read('hash');
				$u->process(WWW_ROOT.'/pic/');
					if($u->processed) {
					@unlink(WWW_ROOT.'pic/sess/'.$s->read('img').'-1'.$s->read('hash').'.jpg');
					@unlink(WWW_ROOT.'pic/sess/'.$s->read('img').'-2'.$s->read('hash').'.jpg');
					unset($img,$img2);
					$this->Post->id =(int) $s->read('id');
					$this->Post->set('public', 0);
					$this->Post->set('created',date('Y-m-d H:i:s',strtotime('now')));
					$this->Post->set('modified',date('Y-m-d H:i:s',strtotime('now')));
					$this->Post->save();
						if(!empty($tag)) {
						$tag = array_unique($tag);
							foreach($tag as $k=>$v) {
								if($k==(int) $this->getOpt('max_tags'))    
								break;
							$v 	= trim($v);
							$v 	= strip_tags($v);
							$t 	= $this->Tag->findByName($v);
								if($t) {
								$this->PostsTag->create();
								$this->Tag->id=$t['Tag']['id'];
								$this->Tag->save(array('Tag'=>array('post_count'=>($t['Tag']['post_count']+1))));
								$this->PostsTag->save(array('PostsTag'=>array('post_id'=>$this->Post->id,'tag_id'=>$t['Tag']['id'])));
								continue;
								}
							$this->Tag->create();
							$this->Tag->save(array('Tag'=>array('name'=>trim($v),'post_count'=>1)));
							$this->PostsTag->create();
							$this->PostsTag->save(array('PostsTag'=>array('post_id'=>$this->Post->id,'tag_id'=>$this->Tag->id)));
							}
						}
					$s->del('id');
					$s->del('step2');
					$s->del('img');
					$s->del('hash');
					$this->redirect('/view/'.$this->Post->id);
					}
				}
			}
		}
	}
[PHP] pobierz, plaintext 

Proszę o pomoc, z góry dziękuję!

http://ellislab.com/codeigniter/user-guide.../image_lib.html