I added the following code to GP Hooks in the wp_footer section. (It was given to me by WP Product Review tech support). I should limit the description length for their tables but doesn’t seem to be working. Did I put it in the right place? Their instructions were to add it to a child theme functions file but I don’t have a child theme set up.
Hooks should only be used for adding content or data to the site / template.
Without a child theme you can use the Code Snippets plugin, you’ll find a link to it in here where it explains a little more about PHP