Having Trouble Creating Multiple Watermark... Can Anyone Help?

[webster08]

I am trying to add two watermarks to one image, but the second watermark is not being merged. Can anyone help me correct my code or send me in the right directions; to correcting this issue?

 

PS: I know that the header is set to plain text, but I have a reason for that.

 

<?php

header('content-type: text/plain text');

$watermark = imagecreatefrompng('watermark.png');
$watermark2 = imagecreatefromgif('watermark.gif');

$watermark_width = imagesx($watermark);
$watermark_height = imagesy($watermark);

$image = imagecreatetruecolor($watermark_width, $watermark_height);
$image = imagecreatefromjpeg($_GET['src']);

$size = getimagesize($_GET['src']);

$dest_x = $size[0] - $watermark_width - 5;
$dest_y = $size[1] - $watermark_height - 5;


$pic = imagecopymerge($image, $watermark, 1, 0, 0, 0, $watermark_width, $watermark_height, 65);
imagecopymerge($pic, $watermark2, 1, 0, 0, 0, $watermark_width, $watermark_height, 65);

imagejpeg($image);
imagedestroy($image);
imagedestroy($watermark);
imagedestroy($watermark2);

?>[code=php:0]

[Psycho]

Well, I see at least one problem:

$pic = imagecopymerge($image, $watermark, 1, 0, 0, 0, $watermark_width, $watermark_height, 65);
imagecopymerge($pic, $watermark2, 1, 0, 0, 0, $watermark_width, $watermark_height, 65);

 

imagecopymerge() copies part of one image into another image - it doesn't return an image (it only returns true/false). In that second line you are trying to copy watermark2 into the return value of the first one. So, you should be doing this:

imagecopymerge($image, $watermark, 1, 0, 0, 0, $watermark_width, $watermark_height, 65);
imagecopymerge($image, $watermark2, 1, 0, 0, 0, $watermark_width, $watermark_height, 65);

 

But, for that to work, watermark 2 will need to have transparency - otherwise it will be covering watermark 1. Although, I've never done that so I'm not positive if transparency is even available when doing that.

[webster08]

I tried your code mjdamato; but it still does not display the second watermark. The second watermark is a transparent gif; so it should not cover the main image.

 

So here's what I got with your code:

<?php

header('content-type: text/plain text');

$watermark = imagecreatefrompng('watermark.png');
$watermark2 = imagecreatefromgif('watermark.gif');

$watermark_width = imagesx($watermark);
$watermark_height = imagesy($watermark);

$image = imagecreatetruecolor($watermark_width, $watermark_height);
$image = imagecreatefromjpeg($_GET['src']);

$size = getimagesize($_GET['src']);

$dest_x = $size[0] - $watermark_width - 5;
$dest_y = $size[1] - $watermark_height - 5;

imagecopymerge($image, $watermark, 1, 0, 0, 0, $watermark_width, $watermark_height, 65);
imagecopymerge($image, $watermark2, 1, 0, 0, 0, $watermark_width, $watermark_height, 65);

imagejpeg($image);
imagedestroy($image);
imagedestroy($watermark);
imagedestroy($watermark2);

?>

 

That is actually what I did at first; the code you presented, but I added in the variable $pic, because the original two lines were not working.

[Psycho]

Have you tried both watermarks individually to ensure they work?

[webster08]

Yeah... I tried them; do both do display separately.

[webster08]

Oh... ok... here we go...  I got it.... figured it out.

 

Here is the final code:

 

<?php

header('content-type: text/plain text');

$watermark = imagecreatefrompng('watermark.png');
$watermark2 = imagecreatefromgif('watermark.gif');

$watermark_width = imagesx($watermark);
$watermark_height = imagesy($watermark);

// here is the fix
$watermark_width2 = imagesx($watermark2);
$watermark_height2 = imagesy($watermark2);

$image = imagecreatetruecolor($watermark_width, $watermark_height);
$image = imagecreatefromjpeg($_GET['src']);

$size = getimagesize($_GET['src']);

$dest_x = $size[0] - $watermark_width - 5;
$dest_y = $size[1] - $watermark_height - 5;

imagecopymerge($image, $watermark, 1, 0, 0, 0, $watermark_width, $watermark_height, 65);
imagecopymerge($image, $watermark2, 1, 0, 0, 0, $watermark_width2, $watermark_height2, 65);

imagejpeg($image);
imagedestroy($image);
imagedestroy($watermark);
imagedestroy($watermark2);

?>

 

Thanks for the help mjdamato!