<?php require_once 'common.php'; $config = HTMLPurifier_Config::createDefault(); $config->set('HTML.Doctype', 'HTML 4.01 Strict'); $config->set('HTML.Allowed', 'b,a[href],br'); $config->set('CSS.AllowTricky', true); $config->set('URI.Disable', true); $serial = $config->serialize(); $result = unserialize($serial); $purifier = new HTMLPurifier($result); echo htmlspecialchars($purifier->purify('<b>Bold</b><br><i><a href="http://google.com">no</a> formatting</i>'));