<!DOCTYPE html>
<html>
<body>
<h1>My first PHP page</h1>
<?php
$docs = $modx->getIterator('modResource', ["parent" => 84]);
foreach($docs as $doc){
$q=$doc->content;
$doc->set("content", preg_replace("/Some value/i", "Replacement", $q));
print_r($doc->content);
// $doc->save();
}
// some comment
?>
</body>
</html>