post_content;
$track_author_id = get_post_field ('post_author', $track_id);
$track_author_name = get_the_author_meta('display_name', $track_author_id);
$track_author_description = get_the_author_meta('description', $track_author_id);
$track_related_posts = get_field('track_relationship', $track_id);

// Reading time total
$reading_time_array = array();
$id_array = array();
foreach( $track_related_posts as $post ):
    setup_postdata($post);
    $reading_time = get_field('reading-time');
    $reading_time_array[] = $reading_time;
    $id_array[] = get_the_ID();
endforeach;
$reading_time_total = array_sum($reading_time_array);
$track_related_count = count($track_related_posts);

$index = array_search($id_post, $id_array);
$prev = null;
$next = null;
if($index !== false && $index > 0 ) $prev = $id_array[$index-1];
if($index !== false && $index < count($id_array)-1) $next = $id_array[$index+1];


$html = file_get_contents(get_template_directory() . '/single-materials.php');
echo '
';
    echo '
';
        print_r( $html );
    echo '
';
echo '
';


?>

    


        

        


            
            

            

                
            
            

        
        

    
    





    

        

            

                
            
            
        
        
    
    




 "yarpp-template-materials.php",
        "limit" => 3,
        "post_type" => isset($_GET['track']) ? array("tracks") : array("materials")
        ),
        isset($_GET['track']) ? $_GET['track'] : get_the_ID()
    );
    }

} ?>