formdhtmltextarea_preview.php

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<?php
include_once dirname(__DIR__) . DIRECTORY_SEPARATOR . 'mainfile.php';

$xoops = Xoops::getInstance();
$xoops->disableErrorReporting();
$myts = MyTextSanitizer::getInstance();

$content = $myts->stripSlashesGPC($_POST['text']);

if (!$xoops->security()->validateToken(@$_POST['token'], false)) {
    $content = 'Direct access is not allowed!!!';
}
$html = empty($_POST['html']) ? 0 : 1;
$content = $myts->displayTarea($content, $html, 1, 1, 1, 1);
if (preg_match_all('/%u([[:alnum:]]{4})/', $content, $matches)) {
    foreach ($matches[1] as $uniord) {
        $utf = '&#x' . $uniord . ';';
        $content = str_replace('%u' . $uniord, $utf, $content);
    }
    $content = urldecode($content);
}

if (! headers_sent()) {
    header('Content-Type:text/html; charset=ISO-8859-1');
    header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
    header('Cache-Control: private, no-cache');
    header('Pragma: no-cache');
}
echo "<div>" . $content . "</div>";