kitzelh

<?php // https://3v4l.org/5fRhD

function ArrayCleaner($input) { 
  foreach ($input as &$value) { 
    if (is_array($value)) { 
      $value = ArrayCleaner($value); 
    }
  }

  return array_filter($input, function($item){

kitzelh

<div id="site">
<header id="header">Heading</header>
<main id="content">
  <p id="one">First Paragraph</p>
  <p id="two">Second Paragraph</p>
  <p id="third">Third Paragraph</p>
  <p id="fourth">
  <table>
    <caption>Original Table</caption>
    <thead>