wordpress functions for displaying content

<?php
// Script for getting posts
function ajax_filter_get_posts( $taxonomy ) {

  // Verify nonce
  if( !isset( $_POST['afp_nonce'] ) || !wp_verify_nonce( $_POST['afp_nonce'], 'afp_nonce' ) )
    die('Permission denied');

  $taxonomy = $_POST['taxonomy'];

  // WP Query
  $args = array(
    'glossary_category' => $taxonomy,
    'post_type' => 'glossary_item',
    'posts_per_page' => -1,
  );

  // If taxonomy is not set, remove key from array and get all posts
  if( !$taxonomy ) {
    unset( $args['cat'] );
  }

  $query = new WP_Query( $args );

  if ( $query->have_posts() ) : while ( $query->have_posts() ) : $query->the_post();

    echo '<h2>'.the_title().'</h2>';
    $output = the_content();

    $result = 'success';

  endwhile; else:
    $output = '<h2>No posts found</h2>';
    $result = 'fail';
  endif;

  $response = json_encode($output);
  echo $response;

  die();
}

add_action('wp_ajax_filter_posts', 'ajax_filter_get_posts');
add_action('wp_ajax_nopriv_filter_posts', 'ajax_filter_get_posts');


// Script for getting terms
function ajax_filter_get_terms( $taxonomy ) {

  // Verify nonce
  if( !isset( $_POST['afp_nonce'] ) || !wp_verify_nonce( $_POST['afp_nonce'], 'afp_nonce' ) )
    die('Permission denied');

  $taxonomy = $_POST['taxonomy'];

  // WP Query
  $args = array(
    'encyclopedia_category' => $taxonomy,
    'post_type' => 'encyclopedia_item',
    'posts_per_page' => -1,
  );

  // If taxonomy is not set, remove key from array and get all posts
  if( !$taxonomy ) {
    unset( $args['encyclopedia_category'] );
  }

  $query = new WP_Query( $args );
   ?> <ul><?php
  if ( $query->have_posts() ) : while ( $query->have_posts() ) : $query->the_post();
?>

    <li class="parent" id="<?php the_ID(); ?>">
    <a class="ajax-click" href="#"><?php the_title(); ?></a>
    <div class="child">
    <?php the_content() ?>
    </div>
    </li>

    <?php

    $result = 'success';

  endwhile;
   ?></ul><?php
 else:
    $output = '<h2>No posts found</h2>';
    $result = 'fail';
  endif;

  $response = json_encode($output);
  echo $response;

  die();

}

add_action('wp_ajax_filter_terms', 'ajax_filter_get_terms');
add_action('wp_ajax_nopriv_filter_terms', 'ajax_filter_get_terms');

// Enqueue script

// Enqueue script
function ajax_filter_posts_scripts() {
  // Enqueue script
  wp_register_script('afp_script', get_stylesheet_directory_uri() . '/inc/ajax-filter-posts.js', false, null, false);
  wp_enqueue_script('afp_script');

  wp_localize_script( 'afp_script', 'afp_vars', array(
        'afp_nonce' => wp_create_nonce( 'afp_nonce' ), // Create nonce which we later will use to verify AJAX request
        'afp_ajax_url' => admin_url( 'admin-ajax.php' ),
      )
  );

}
add_action('wp_enqueue_scripts', 'ajax_filter_posts_scripts', 100);

    function my_load_ajax_content () {
          if( !isset( $_POST['afp_nonce'] ) || !wp_verify_nonce( $_POST['afp_nonce'], 'afp_nonce' ) )
    die('Permission denied');

        $anchor = '<a href="';
        $close_anchor = '" class="fancybox-vimeo">here</a>';
        $post_id = $_POST[ 'post_id' ];

        $post = get_post( $post_id, OBJECT);

        $post_audio = the_field('audio_file', $post);
        $post_video = '.$anchor'.the_field('vimeo_link_double', $post)'.$close_anchor.';
        $response = apply_filters( 'the_content', $post->post_content, $post_audio, $post_video );

        echo $response;
        die(1);
    }

add_action('wp_ajax_load-content', 'my_load_ajax_content');
add_action ( 'wp_ajax_nopriv_load-content', 'my_load_ajax_content' );
?>