list_files() error undefined function

Paula

I am trying to list images from my theme directory with list_files() WordPress defined function.

$dir_path = get_template_directory_uri() . '/images/';
$images = list_files( $dir_path );

But i am getting the error:

error “undefined function”.
the PHP scandir(), doesn’t work either.

Jacob

You have to use the full path to the folder to list all the files. But you are using the folder URI.
Use the get_template_directory() instead of get_template_directory_uri() to make the codes working.

$dir_path = get_template_directory() . '/images/';
$images = list_files( $dir_path );

Take a look to the documentation for more details -
https://developer.wordpress.org/reference/functions/list_files/
https://developer.wordpress.org/reference/functions/get_template_directory/