Create own Wordpress shortcode gallery

Question

How I can handle this shortcode:
[my_gallery]
img01.jpg
img02.jpg
img03.jpg
img04.jpg
[/my_gallery]

I can't understand how to write a function, to handle image files name.

Answer 1

Are you going to put newlines in there between each image? or just spaces? I'll put in both for this example, checking if there's a newline.

You would want something like this in your functions.php:

add_shortcode('my_gallery', 'gallery_function');
function gallery_function($atts, $code=''){
   $files=preg_split( '/\s+/', $code ); // Added in from Jan's comment.

   foreach($files as $img){
      if($img=="")
          continue; // ensures that no empty items from the split have entered in, since that is possible with the preg_split
      //handle each filename in here.
   }
}

It's not perfect.. if you use both spaces and newlines in your shortcode, it'll mess things up - though that could be dealt with in more detail inside the function.

Hope this helps.