Watermark images using GD

Hey

How can i watermark images in a folder using GD? all images that is and not only 1

 

You know... this thing called Google...
http://php.net/manual/en/image.examples.merged-watermark.php
http://runnable.com/UnF5hbIOBM91AAAb/how-to-add-watermark-to-an-image-with-gd-library-for-php
I'm sure these methods can be tweaked to fit your needs

 

That's for just one single images, i have seen loads of them but not for doing batch watermarking :/

 

Do a loop through each file?
Read in the files, one by one, apply watermark, done.

 

I tried the following code with the following errors, can you se what im doing wrong? :/

Notice: Undefined variable: image_in_folder in /home/mvafoto/gallery/test/test.php on line 20

Warning: Invalid argument supplied for foreach() in /home/mvafoto/gallery/test/test.php on line 20

<?
error_reporting(E_ALL);
ini_set('display_errors', 'on');
$dir_to_img='/';
    $watermark = "watermark.png";
    $dir_to_new_image='/watered/';

    if(is_dir($dir_to_img)){
        if($dir = opendir($dir_to_img)){
            while(($archivo = readdir($dir)) !== false){
                if($archivo != '.' && $archivo != '..' && $archivo != '.htaccess'){
                    if(substr($archivo, -4) == '.jpg' || substr($archivo, -4) == '.JPG') //only jpg files
                       $image_in_folder[] = $archivo;
                }
            }
        closedir($dir);
        }
    }

    foreach ($image_in_folder as $imagen) {
        $im = imagecreatefrompng($watermark);
        $im2 = imagecreatefromjpeg($dir_to_img."/".$imagen);

            imagecopy($im2, $im, (imagesx($im2)/2)-(imagesx($im)/2), (imagesy($im2)/2)-(imagesy($im)/2), 0, 0, imagesx($im), imagesy($im));

        if(!is_dir($dir_to_new_image)){   //save to another dir
            mkdir($dir_to_new_image, 0777, true);
        }

        imagejpeg($im2,"$dir_to_new_image/$imagen",90);
        imagedestroy($im);
        imagedestroy($im2);
     }
?>

PHP:

 

Well, two questions, really. Are you trying to read root? Because that's what you're trying to open.
Second, you should assign $image_in_folder to an array outside the loop. As I can see now, I'm guessing there are no images in the root folder, hence the $image_in_folder-array is never created, and the for each fails

 

Got it to work, was just thinking of / as the root of the current folder!: P