Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 720
  • Last Modified:

Adding a watermark with PHP

Below is the code I'm trying to use to firstly resize my image and then add a watermark to it..but i just can't get it to work. Any help would be greatly appreciated.

$cfg_fullsizepics_path = "../images/magazine/$edition/articles/$id/main";
$cfg_thumb_path = "../images/magazine/$edition/articles/$id/main";
$filepath = "../images/magazine/$edition/articles/$id/main";
$dir = dir($filepath);
while($entry=$dir->read()) {
    if($entry == "." || $entry == "..") {
    $fp = @fopen("$filepath/$entry","r");
    $new_w = 800;
$image_stats = GetImageSize($cfg_fullsizepics_path."/".$entry);
$imagewidth = $image_stats[0];
$imageheight = $image_stats[1];
$img_type = $image_stats[2];
$ratio = ($imagewidth / $new_w);
$new_h = round($imageheight / $ratio);
$filename = $entry;
 Define('WATERMARK_IMAGE', './wt.png'); // path to watermark image
 Define('WATERMARK_PERCENT', '70'); // Intensity of the transition (in percent)
 Define('WATERMARK_ALIGN_H', 'right'); // left / right / center
 Define('WATERMARK_ALIGN_V', 'bottom'); // top / bottom / center
 Define('WATERMARK_MARGIN', '10'); // margin
 if ($img_type=="2") {
  if ($wt_image) {

   if (WATERMARK_ALIGN_V=='top') {
   } elseif (WATERMARK_ALIGN_V=='bottom') {
   } elseif (WATERMARK_ALIGN_V=='center') {

   if (WATERMARK_ALIGN_H=='left') {
   } elseif (WATERMARK_ALIGN_H=='right') {
   } elseif (WATERMARK_ALIGN_H=='center') {
      $src_img = imagecreatefromjpeg($cfg_fullsizepics_path."/".$entry);
      $dst_img = imagecreatetruecolor($new_w,$new_h);
      $tmp = imagecopyresampled($dst_img,$src_img,0,0,0,0,$new_w,$new_h,imagesx($src_img),imagesy($src_img));
      imagecopymerge($tmp, $wt_image, $wt_x, $wt_y, 0, 0, $image2_width, $image2_height, WATERMARK_PERCENT);
imagejpeg($dst_img, "$cfg_thumb_path"."/$entry");
1 Solution
I do this for an application I have... the solution is pretty easy once you get it figured out.  My code is a bit different than yours but you should be able to get the information you need from it without much problem.


//The tmp file -- file that will have the composite of both images
$tmpFile = $tempSavePath;

//The image to use as the watermark
$watermarkFile = "/watermark/watermark.jpg";
//add the watermark to the image if there has been a watermark selected
    $waterDimen = getImageSize($watermarkFile);
    //The image that we want to add the watermark to
    $destinationFile = $tempSavePath;
    $rawDimen = getImageSize($destinationFile);
    //Place the watermark 5 pixels away from the right hand side of image
    $placement_x = $rawDimen[0]-$waterDimen[0]-5;
    //Place the watermark 5 pixels away from the bottom of image
    $placement_y = $rawDimen[1]-$waterDimen[1]-5;
    //The path to the imagemagick composite program.
    $composite = "{$imagemagickdir}/composite";
    //Create and execute the command to create the watermark file (saves to the $tmpFile)
    $cmd = "$composite -watermark 13.0 -geometry +$placement_x+$placement_y $watermarkFile $destinationFile $tmpFile";

//Resize the image to the most common 2 sizes, plus a 'full' size for later copying and using
$command = "{$imagemagickdir}/convert -size 800x600 '{$tempSavePath}' -resize 800x600 +profile \"*\" '{$final_savePath}/{$productId}.jpg'";
ignore the comment saying:
//Resize the image to the most common 2 sizes, plus a 'full' size for later copying and using

it should say:
//Resize the image to a standard 800x600 size
spikeyjamesAuthor Commented:
Is there any chance you could just tell me what is wrong with my code? because I'm not that good with PHP, and I can't see from that what I've done wrong. Also, what is imagemagick? That is not in my script at all...is it needed?

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

here is an example much closer to yours (found in a file i will call 'image.php').  you call it from another page like this: <img src="image.php">

Here's the code:

//Get the original image size
list($width_orig, $height_orig) = getimagesize($imagePath);

//Set the desired height
$width = $globalInfo->GetOneSizeImageWidth($portrait);
$height = $globalInfo->GetOneSizeImageHeight($portrait);

//using the two sets of sizes from above, get the new photo size
if ($width && ($width_orig < $height_orig))
  $width = ($height / $height_orig) * $width_orig;
  $height = ($width / $width_orig) * $height_orig;

// Resample the image to the size wanted
$image_p = imagecreatetruecolor($width, $height);
$image = imagecreatefromjpeg($imagePath);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);

//Get the watermark file in a usable format
$watermark = imagecreatefromgif('images/copyright_portrait.gif');  

//Get the size of the watermark image
$watermark_width = imagesx($watermark);  
$watermark_height = imagesy($watermark);  

//get the x and y locations for where you want to put the watermark (change this to whatever you'd like)
$dest_x = ($width - $watermark_width);
$dest_y = ($height - $watermark_height);
imagecopymerge($image_p, $watermark, 0, $dest_y, 0, 0, $watermark_width, $watermark_height, 25);  

//display the image

//destroy the two temporary images
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.
I will leave the following recommendation for this question in the Cleanup topic area:
Accept: Caliguian

Any objections should be posted here in the next 4 days. After that time, the question will be closed.

EE Cleanup Volunteer
spikeyjamesAuthor Commented:
No, I wanted to resize the image when it was uploaded to the server, not when it was downloaded from the server - that response didn't answer my question.
That code works for both uploading and displaying.  The only difference you would have for image you wanted to save instead of display is change the line:



imagejpeg($image_p, 'wherever/you/want/to/put/the');  

Looks like you didn't even try it.  But whatever.
I agree with Caliguian, if this had of been followed up the question would have been answered.

My 2 cents :)
spikeyjamesAuthor Commented:
You're right. I moved on to more important matters and left this aside. Happy to offer what little points I have left, as you did eventially answer the question :P


Featured Post

Become an Android App Developer

Ready to kick start your career in 2018? Learn how to build an Android app in January’s Course of the Month and open the door to new opportunities.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now