Displaying names of categories after multiple category query

You’d need to grab the categories, turn them in to an array, and then output the title for each using the get_terms(); function.

$cats = explode(',', $_REQUEST['cat']);
$args = array(
    'include' => $cats,
    'field' => 'name'
);
$term_names = get_terms('category', $args)

if(!empty($term_names)) : foreach($term_names as $term_name) :

        echo $term_name;

    endforeach;
endif;

Code is untested, so may contain a typo or two.

I’m very bad at PHP and hacking WordPress so please bear with me.

I assume that the code you provided goes after The Loop and then I just replace single_cat_title(); with get_terms( $term_name );, am I correct?

I hate to ask again but I really need help.

Is the above code provided by duck__boy meant to be replacement for single_cat_title();? I tried to replace it with that but it didn’t do anything, multi category query still shows just one title.

I still haven’t resolved this problem so let’s try this again.

Here is my full category.php code: https://pastebin.com/LDwrDaxh

Now then, if I replace single_cat_title() with

$cats = explode(',', $_REQUEST['cat']);
$args = array(
    'include' => $cats,
    'field' => 'name'
);
$term_names = get_terms('category', $args);

if(!empty($term_names)) : foreach($term_names as $term_name) :

        echo $term_name;

   endforeach;
endif;

The content section goes blank. How would I resolve this?