embed logo on upload image in php

[neovantage]

Hey All,

I want to embed logo while upload an image. I mean when i upload an image, i want to embed the logo of the website in that uploaded image.

Kindly help me out to sort out my problems and as i always get a reply from this great community so i believe again i will get the solution of my problem here.

kind regards,
Mohsin Rafique

[Dormilich]

check out imagecopymerge( ). especially the comments.

[neovantage]

Thank you very much
I will study n try to do that. As soon as i will do i will be back with that solution

[neovantage]

Hey Dormilich,
I found a function from there which is exactly up to my requirement but in my case it is not working and show dirty characters after creating image.

Here is my code i am using for uploading and for watermarking

$file_extension=strtolower(get_ext($_FILES['photo_1']['name']));
$photo_1="images/cars/".time().'_1.'.$file_extension;
move_uploaded_file($_FILES['photo_1']['tmp_name'],$photo_1);
$imageproduct = new Thumbnail($photo_1, 640, 480, 100);
$imageproduct->save($photo_1);
$watermarklogo="images/logo_png.png";
watermark($photo_1,$watermarklogo);

And this is the function i got from there which comes up to my requirement

function watermark($sourcefile, $watermarkfile) {
		#
		# $sourcefile = Filename of the picture to be watermarked.
		# $watermarkfile = Filename of the 24-bit PNG watermark file.
		#
		
		//Get the resource ids of the pictures
		$watermarkfile_id = imagecreatefrompng($watermarkfile);
		
		imagealphablending($watermarkfile_id, false);
		imageSaveAlpha($watermarkfile_id, true);
		
		$fileType = strtolower(substr($sourcefile, strlen($sourcefile)-3));
		
		switch($fileType) {
			case('gif'):
				$sourcefile_id = imagecreatefromgif($sourcefile);
				break;
			case('png'):
				$sourcefile_id = imagecreatefrompng($sourcefile);
				break;
			default:
				$sourcefile_id = imagecreatefromjpeg($sourcefile);
		}
		//Get the sizes of both pix  
		$sourcefile_width=imagesx($sourcefile_id);
		$sourcefile_height=imagesy($sourcefile_id);
		$watermarkfile_width=imagesx($watermarkfile_id);
		$watermarkfile_height=imagesy($watermarkfile_id);
	
		$dest_x = ( $sourcefile_width / 2 ) - ( $watermarkfile_width / 2 );
		$dest_y = ( $sourcefile_height / 2 ) - ( $watermarkfile_height / 2 );
	
		// if a gif, we have to upsample it to a truecolor image
		if($fileType == 'gif') {
			// create an empty truecolor container
			$tempimage = imagecreatetruecolor($sourcefile_width, $sourcefile_height);
	   		// copy the 8-bit gif into the truecolor image
			imagecopy($tempimage, $sourcefile_id, 0, 0, 0, 0, $sourcefile_width, $sourcefile_height);
	  		// copy the source_id int
			$sourcefile_id = $tempimage;
		}
		imagecopy($sourcefile_id, $watermarkfile_id, $dest_x, $dest_y, 0, 0, $watermarkfile_width, $watermarkfile_height);
		//Create a jpeg out of the modified picture
		switch($fileType) {	
			// remember we don't need gif any more, so we use only png or jpeg.
			// See the upsaple code immediately above to see how we handle gifs
			case('png'):
				header("Content-type: image/png");
				imagepng ($sourcefile_id);
				break;
			default:
				header("Content-type: image/jpg");
				imagejpeg ($sourcefile_id);
		}
		imagedestroy($sourcefile_id);
		imagedestroy($watermarkfile_id);
	}

kindly help me out to sort out my problem pleaseeeee

[Dormilich]

any errors, warnings, notices? have you tried with bare/sample images (without uploading) first? did you check the function return values?

[neovantage]

Yeh it post and give warning message.
And also show dirty characters in it.

I am attaching the image of it

[Dormilich]

what does the error message say? (too small to read). the error message directly involves the "dirty characters", once you clear the error it should be ok.

EDIT: the "dirty characters" are actually your picture… expressed as string

[neovantage]

It is saying that cannot modify header information

Warning: Cannot modify header information - headers already sent by (output started at E:\server\htdoc s\themosaicdesi gns\site\projec ts\carsbay\incl udes\thumbnail. class.php:423) in E:\server\htdoc s\themosaicdesi gns\site\projec ts\carsbay\edit-photos.php on line 272

[Dormilich]

what does

output started at E:\server\htdoc s\themosaicdesi gns\site\projec ts\ca rsbay\includes\ thumbnail.class .php:423

refer to?

[Markus]

It is saying that cannot modify header information

On line 423 of E:\server\htdoc s\themosaicdesi gns\site\projec ts\ca rsbay\includes\ thumbnail.class .php, you have sent output to the browser. You cannot do that if you intend to modify the headers later.

[neovantage]

Basically thumbnail.class .php resize my uploaded image.
What i want actually is
i want to upload pictures. Pictures may be large in size so i have to resize them as the client requirement. Now he want that When an image upload then it must be resize and also this process embed his website logo tu the uploaded image and that is what i am trying to do.

i am using thumbnail.class which resize the uploaded image and save it to the required path.

If i even exclude it even then it shows n give me dirty characters and do not embed logo into the uploaded image

[neovantage]

So what should i do now.

As i need to upload the image, embed logo into uploaded image, then i need to resize the image and then need to save it

[neovantage]

Sir i want that when i upload an image it get that image.
1. Upload it to the server
2. Embed logo into it
3. Resize it too.

These 3 things i want to do

Awaiting of your guideline to do these step by step

[Dormilich]

first, check what's causing the output in thumbnail.class .php on line 423.

[neovantage]

i am attaching the file thumbnail.class .php file as in line 423 there is nothing in it