MODX snippet: wrap html content tables with a div

handleContent

<?php
if (!$input) {
  return '';
}

$doc = new DOMDocument();
$doc->loadHTML("\xEF\xBB\xBF" . $input, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);

// Find all tables and wrap them with div.table-responsive element
$tables = $doc->getElementsByTagName('table');
$tableWrapper = $doc->createElement('div');
$tableWrapper->setAttribute('class', 'table-responsive');
foreach ($tables as $table) {
  $wrapper = $tableWrapper->cloneNode();
  $table->parentNode->replaceChild($wrapper, $table);
  $wrapper->appendChild($table);
}

return html_entity_decode($doc->saveHTML());