Post view count won't count

Hi community.

I have an issue with my functions.php code snippet which is supposed to count the views on my posts, but it seems not to work. It is a code of snippet I recieved through a tutorial but it seems not to read to my database. The view count is saying 0 even though the post has been visited a few times. The code snippet looks as following:

function getPostViews($postID)
	{
		$count_key = 'post_views_count';
		$count = get_post_meta($postID, $count_key, true);
		if ($count=='')
		{
			delete_post_meta($postID, $count_key);
			add_post_meta($postID, $count_key, '0');
			return "0 views";
		}
		return $count.' views';
	}

	// Count post view

	function setPostViews($postID)
	{
		$count_key = 'post_views_count';
		$count = get_post_meta($postID, $count_key, true);
		if ($count=='')
		{
			$count = 0;
			delete_post_meta($postID, $count_key);
			add_post_meta($postID, $count_key, '0');
		}else{
			$count++;
			update_post_meta($postID, $count_key, $count);
		}
	}

Are anyone able to see or tell me what I have done wrong or is missing.

Thank you !