title: How to combine this two "if" conditions?
body: <p>With this code I get the last 3 posts that contain "solar-signs-related" tag on the custom post "product" page that have "solar-signs-streetscape-elements" term. </p>
  
  <p>But how to combine two "if" so it will display also the blog posts that have "interior-system-related" tag if the custom post "products" page is "interior-systems"?</p>
  
  <pre><code>if ( has_term( 'interior-systems', 'categories' ) ) {
    $args = array(
    'post_type' =&gt; 'post',
    'showposts' =&gt; 3,
    'post__not_in' =&gt; array( $post-&gt;ID ),
    'post_status' =&gt; array('publish'),
    'orderby' =&gt; 'date',
    'order' =&gt; 'DESC',
      'tax_query' =&gt; array(
       array(
      'taxonomy' =&gt; 'post_tag',
      'field' =&gt; 'slug',
      'terms' =&gt; array('interior-systems-related') )
      )
  );
  }
  if ( has_term( 'solar-signs-streetscape-elements', 'categories' ) ) {
  $args = array(
    'post_type' =&gt; 'post',
    'showposts' =&gt; 3,
    'post__not_in' =&gt; array( $post-&gt;ID ),
    'post_status' =&gt; array('publish'),
    'orderby' =&gt; 'date',
    'order' =&gt; 'DESC',
      'tax_query' =&gt; array(
       array(
        'taxonomy' =&gt; 'post_tag',
        'field' =&gt; 'slug',
        'terms' =&gt; array('solar-signs-related') )
     )
   );
   }
  $query = new WP_Query($args);
  
  if ($query-&gt;have_posts()) : while ($query-&gt;have_posts()) :       
  $query-&gt;the_post(); ?&gt;           
  &lt;div class="post-wrap relat relatblog"&gt;
  &lt;h2 class="entry-title"&gt;&lt;?php the_title(); ?&gt;&lt;/h2&gt;
  &lt;/div&gt;                   
    &lt;?php endwhile;
    wp_reset_postdata();
    endif;
    endwhile; ?&gt;
  </code></pre>