CPT Archive Slug to Title

archive-slug-to-title.php

<?php
/**
 * Archive Slug to Title
 *
 * Gets `this` post's post type, then gets the archive slug of the post
 * then outputs the slug, replacing `-` with ` ` and uppercasing every word
 *
 * @NOTE: This is not a perfect solution but will work for 90% of use cases.
 * For more control, create an ACF `options` page of that post type with a 
 * text input. Then use this for the title. If doing this, it's also a 
 * good idea to add a notice for that archive explaining where to edit the 
 * page title. AVOID manually adding the title to the template.
 */

// Vars
$cpt_obj = get_post_type_object($post->post_type);
$cpt_obj_archive_slug = $cpt_obj->has_archive;
$cpt_obj_archive_title = ucwords(str_replace('-', ' ', $cpt_obj_archive_slug));
?>

<h1 class="entry-title"><?php echo $cpt_obj_archive_title; ?></h1>