remove double slashes from modx output

remove-slashes.php

<?php

$output = $this->modx->documentOutput;

$pattern = '/<a[^>]*>/';
preg_match_all($pattern, $output, $matches);
$matches = array_pop($matches);

$replace = array();
foreach($matches as $key => $match) {
  $matches[$key] = $match;
  $replace[$key] = preg_replace('~/+~', '/', $match);
}

$output = str_replace($matches, $replace, $output);

$this->modx->documentOutput = $output;