I implemented the code in my website and it is working like a charm! I now have a button leading to a new random post from the same category (see code below)
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add_action(‘init’,'random_add_rewrite’);
function random_add_rewrite() {
global $wp;
$wp->add_query_var(‘random’);
add_rewrite_rule(‘random/?$’, ‘index.php?random=1′, ‘top’);
}

add_action(‘template_redirect’,'random_template’);
function random_template() {
if (get_query_var(‘random’) == 1) {
$args = array( ‘numberposts’ => 1, ‘orderby’ => rand, ‘category__in’ => 11 );
$posts = get_posts( $args );
foreach($posts as $post) {
$link = get_permalink($post);
}
wp_redirect($link,307);
exit;
}
}
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Now I have a question:
What do i need to change to be able to add another button to do the same in yet another category?
I guess the code should be the same but i need to chane the “random” at the end of my url by “random1″ or something, and change the category number.
I am trying to find the bit of code i need to change to affect only the word i should put at the end and the category.
Would i need to add the whole snippet below the first one?

Thanks for the help!

Why the foreach() instead of just

wp_redirect( get_permalink( $posts['0'] ), 307 );

?