Count parent and children pages. wp_get_post_parent_id( get_the_ID() )
<?php
<!--
### Display brumbread only if the current page being viewd is a child page.
-->
<?php
// // Get the ID of the current page
// echo get_the_ID();
// wp_get_post_parent_id();
// echo wp_get_post_parent_id( get_the_ID() ); // the page will return 0, if it doesn't have a parent
$theParent = wp_get_post_parent_id( get_the_ID() );
\!h if ( $theParent ){ ?>
<div class="metabox metabox--position-up metabox--with-home-link">
<p><a class="metabox__blog-home-link" href="<?php echo get_permalink( $theParent ) ?>"><i class="fa fa-home" aria-hidden="true"></i> Back to <?php echo get_the_title( $theParent ); ?> </a> <span class="metabox__main">
<?php echo the_title(); ?></span></p>
</div>
\!h <?php } ?> <!-- Display brumbread only if the current page being viewd is a child page. -->
<?php
// // Get the ID of the current page
// echo get_the_ID();
// wp_get_post_parent_id();
// echo wp_get_post_parent_id( get_the_ID() ); // the page will return 0, if it doesn't have a parent
\!h $theParent = wp_get_post_parent_id( get_the_ID() );
if ( $theParent ){ ?>
<div class="metabox metabox--position-up metabox--with-home-link">
<p><a class="metabox__blog-home-link" href="<?php echo get_permalink( $theParent ) ?>"><i class="fa fa-home" aria-hidden="true"></i> Back to <?php echo get_the_title( $theParent ); ?> </a> <span class="metabox__main">
<?php echo the_title(); ?></span></p>
</div>
\!h <?php } ?>