Hi Mouloud,

$id can be structured in different ways depending on the component that you are using.

In most cases in com_content, when you are viewing an article then $id will be structured like "24:content-layouts", with the ID number of the article first followed by ":" and the title of the article.

If you want to just get the ID number from the beginning of the string, you can do it like this:

if ( (int)$id == 48 ) return 51;

However, if you are viewing a "category" page, then $id can represent different values depending on whether you are looking at the blog/list view, or if you have clicked on one of the articles to view just that article.

When you are on the category page, $view will equal "category", and $id will equal the category ID. When you click on one of the articles in the category, $view will equal "article" and $id will be the article id and title (e.g. "24:content-layouts").

So it pays to check more than just the id, because you sometimes won't know what $id is referring to.

e.g.

if ($option == "com_content" and $view == "article" and (int)$id == 48 ) return 51;

Hope that helps,
Stephen