How to add Copyright and Authors info to Images created in PHP?

Question

Is there any way to add Copyright info to the image file created by PHP?

To be clearer, you can add copyright info to a file with photoshop, so when you get its properties, you see something similar to:

File Properties of an Image File opened in Windows 7

I want to Add/Edit Details info of a file in php. Is is possible?

EDIT:

I get an image from user input, then resize it with this function:

 function image_resize($src, $w, $h, $dst, $width, $height, $extension )
 {
   switch($extension){
     case 'bmp': $img = imagecreatefromwbmp($src); break;
     case 'gif': $img = imagecreatefromgif($src); break;
     case 'jpg': $img = imagecreatefromjpeg($src); break;
     case 'png': $img = imagecreatefrompng($src); break;
     default : return "Unsupported picture type!";
  }
   $new = imagecreatetruecolor($width, $height);
  // preserve transparency
    if($extension == "gif" or $extension == "png"){
     imagecolortransparent($new, imagecolorallocatealpha($new, 0, 0, 0, 127));
      imagealphablending($new, true);
     imagesavealpha($new, false);
   }
   imagecopyresampled($new, $img, 0, 0, 0, 0, $width, $height, $w, $h);
   imageinterlace($new,1);//for progressive jpeg image
   switch($extension){
     case 'bmp': imagewbmp($new, $dst); break;
     case 'gif': imagegif($new, $dst); break;
     case 'jpg': imagejpeg($new, $dst); break;
     case 'png': imagepng($new, $dst); break;
   }
   return true;
 }

How do you make/edit the images in php? What does your code look like? — DocRattie, Jun 12 '15 at 10:32
@DocRattie, I edited my question and added some of my codes that creates image file — Ormoz, Jun 12 '15 at 10:43
have you tried this? http://php.net/manual/en/function.iptcembed.php — Nikko, Jun 12 '15 at 10:53
@Nikko Tnanks it was very helpful. But apparently it only serves for `jpeg` files. Are there any method available for other image formats like `gif` and `png`? — Ormoz, Jun 12 '15 at 19:04
Without knowing the circumstances, I find it a bit tasteless setting the author and copyright on images uploaded by users. Just because they’re uploading images to your site doesn’t assign ownership/copyright to you. — Martin Bean, Jun 12 '15 at 19:18
@MartinBean Actually I want to read the `copyright` data from the uploaded file and append it to the file created by `php` — Ormoz, Jun 12 '15 at 19:21

Eborbob · Accepted Answer · 2015-06-13T10:04:50.387

I don't believe that PHP natively contains a function to edit the EXIF data in a JPEG file, however there is a PEAR extension that can read and write EXIF data.

pear channel-discover pearhub.org
pear install pearhub/PEL

Website for the module is at http://lsolesen.github.io/pel/ and an example for setting the description is at https://github.com/lsolesen/pel/blob/master/examples/edit-description.php

UPDATE:

It seems the pearhub.org site is down / gone forever, but you can download the files from GitHub (no installation / setup required, just include the autoload.php file).

Below is an example to set the copyright field in a JPEG file. Files downloaded from GitHub are placed in a subdirectory called pel though you can place them where-ever you like (just update the require_once line).

<?php

// Make the PEL functions available
require_once 'pel/autoload.php';  // Update path if your checked out copy of PEL is elsewhere

use lsolesen\pel\PelJpeg;
use lsolesen\pel\PelTag;
use lsolesen\pel\PelEntryCopyright;

/*
 * Values for you to set
 */

// Path and name of file you want to edit
$input_file = "/tmp/image.jpg";

// Name of file to write output to
$output_file = "/tmp/altered.jpg";

// Copyright info to add
$copyright = "Eborbob 2015";


/*
 * Do the work
 */

// Load the image into PEL
$pel = new PelJpeg($input_file);

// Get the EXIF data (See the PEL docs to understand this)
$ifd = $pel->getExif()->getTiff()->getIfd();

// Get the copyright field
$entry = $ifd->getEntry(PelTag::COPYRIGHT);

if ($entry == null)
{
        // No copyright field - make a new one
        $entry = new PelEntryCopyright($copyright);
        $ifd->addEntry($entry);
}
else
{
        // Overwrite existing field
        $entry->setValue($copyright);
}

// Save the updated file
$pel->saveFile($output_file);

thanks, But I think it is not common to modify `EXIF` data. Can you create and modify `Copyright` field with that? — Ormoz, Jun 12 '15 at 19:10

How to add Copyright and Authors info to Images created in PHP?

1 Answers1