code

function after_post_ad() { ?>

  <?php
  if (is_page('test')) { // pixenate page tag
    include (ABSPATH . '/pixenate/index.php');
  }
  ?>

  <?php
  if (is_page('arrow')) { // pixenate page tag
    include (ABSPATH . '/pixenate/arrow.php');
  }
  ?>

  <?php
  if (is_page('sandy')) { // pixenate page tag
    include (ABSPATH . '/pixenate/sand.php');
  }
  ?>