How can I limit categories displaying in posts

Question

I want to show the limited categories displaying in my post. Here is my blog page.

https://k2fly.com/blog/

Image

Kindly visit the page and give me advice how can i reduce category number displaying. I have tried with this codes but not working

<?php
// display 7 random categories

$cats ='';
$categories=get_categories('posts_per_page=5&exclude=' . $GLOBALS[asides_id]);
$rand_keys = array_rand($categories, 4);

foreach ($rand_keys as $key) {

    $cats .= $categories[$key]->term_id .',';

}

wp_list_categories('title_li=&include='.$cats);
?>

Answer 1

Would you please try the get_categories function in the following way?

$categories=get_categories( array(
'number' => 5,
'exclude' => $GLOBALS[asides_id]
) );