arc-hive-wordpress-theme/archive.php

<?php
/**
 * The template for displaying archive pages
 *
 * Used to display archive-type pages if nothing more specific matches a query.
 * For example, puts together date-based pages if no date.php file exists.
 *
 * If you'd like to further customize these archive views, you may create a
 * new template file for each one. For example, tag.php (Tag archives),
 * category.php (Category archives), author.php (Author archives), etc.
 *
 * @link https://codex.wordpress.org/Template_Hierarchy
 *
 * @package arcHIVE-theme
 * @since arcHIVE-theme 1.0.0
 */

get_header(); ?>

<?php
if ( is_post_type_archive ( 'archive_resource' ) ) :
  get_template_part( 'template-parts/announcement', 'resources' );
else:
  get_template_part( 'template-parts/announcement', '' );
endif;
?>

  <article>
    <main>
      <?php
      // https://codex.wordpress.org/Conditional_Tags
      if ( is_post_type_archive ( 'archive_resource' ) ) :
        //https://developer.wordpress.org/reference/functions/get_template_part/#comment-4130
        get_template_part( 'template-parts/section', 'resources', array( 'post_per_page' => '10' ) );
      elseif ( is_category( 'news' ) ):
        $thiscategoryname = esc_html( get_the_category()[0]->name );
        get_template_part( 'template-parts/section', 'categoryposts', array( 'category_name' => $thiscategoryname,'post_per_page' => '3' ) );
      elseif ( is_category( '' ) ):
        $thiscategoryname = esc_html( get_the_category()[0]->name );
        get_template_part( 'template-parts/section', 'categoryposts', array( 'category_name' => $thiscategoryname,'post_per_page' => '6' ) );
      else :
      ?>

          <?php if ( have_posts() ) :
               // Start the Loop
               while ( have_posts() ) : the_post();
                get_template_part( 'template-parts/content', get_post_format() );
               endwhile;
            else :
               get_template_part( 'template-parts/content', 'none' );
            endif; // End have_posts() check.
            ?>

            <?php
            // Display navigation to next/previous pages when applicable
            if ( function_exists( 'foundationpress_pagination' ) ) :
              foundationpress_pagination();
            elseif ( is_paged() ) :
            ?>
              <nav id="post-nav">
                <div class="post-previous"><?php next_posts_link( __( '&larr; Older posts', 'foundationpress' ) ); ?></div>
                <div class="post-next"><?php previous_posts_link( __( 'Newer posts &rarr;', 'foundationpress' ) ); ?></div>
              </nav>
        <?php endif; ?>

      <?php
      endif;//end if is archive_resource
      ?>
    </main>
  </article>
<?php get_footer();