There are several situations when we need to add watermark to the image to protect copyrights and authorship of those images. But doing this task using some application isn’t a smart option. I am going to tell you a very simple and sophisticated way to generate the images with watermark dynamically using PHP.
PHP GD library is really a helpful tool to perform some image related tasks. We are going to use this library to add watermark to a bunch of images in this tutorial.
In this tutorial, we are going to add a watermark to all images in a folder dynamically and saving all those images in a different folder.
Here is the PHP code:
<?php
//Source folder where all images are placed
$source="source";
//Destination folder where all images with watermark will be copied
$destination="destination";
//Creating an image object of watermark image
$watermark=imagecreatefrompng("watermark.png");
//Margin of watermark from right and bottom of the main image
$margin_right=10;
$margin_bottom=10;
//Height ($sy) and Width ($sx) of watermark image
$sx=imagesx($watermark);
$sy=imagesy($watermark);
//Get list of images in source folder
$images=array_diff(scandir($source), array('..', '.'));
foreach($images as $image){
//Create image object of main image
$img=imagecreatefromjpeg($source.'/'.$image);
//Copying watermark image into the main image
imagecopy($img, $watermark, imagesx($img) - $sx - $margin_right, imagesy($img) - $sy - $margin_bottom, 0, 0, $sx, $sy);
//Saving the merged image into the destination folder
imagejpeg($img, $destination.'/'.$image,100);
//Destroying the main image object
imagedestroy($img);
}
//Destroying watermark image object
imagedestroy($watermark);
DOWNLOAD CODE
You may be interested in my another tutorial that will explain how to add watermark to images in a folder and it’s all sub folders.
