Andrey

<?php
$str = '<div class="video-iframe yt-vme-container" style="position: relative; inset: unset; max-width: 640px; padding: unset; height: 100%; width: 100%;"><script type="text/javascript" src="https://youtube-com.cdn.vidyome.com/vidyome/builds/player.js" id="vme_player_13232258508328254" container-id="vme-yt-66035627250847576" site-id="MTcwNQ==" video-id="ytb" video-play="false" video-source="https://www.youtube.com/embed/b6aLl-W8gCk?" video-poster="https://i.ytimg.com/vi/b6aLl-W8gCk/hqdefault.jpg">';
preg_match(' /video-source="(.*?)" /', $str, $match);
return $match[1];

<img src="site.com/foto.jpg" onerror="this.setAttribute('src', 'site.com/nofoto.jpg')">

$placeholders['link'] = $modx->makeUrl($modx->resource->id, $modx->context->key, $params, 'full');

<?php
$sth = $modx->query("SELECT * FROM reg_users");
$result = $sth->fetchAll(PDO::FETCH_ASSOC);
foreach ($result as $data) {
    $regNum = $data['regNum'];
}
?>
<div><?php echo $regNum;?></div>
<?php

$modx->resource->set('content', $str);

modplugin/13.include.cache.php on line 23

[[pdoResources?
    &parents=`1,3,5` //тут родители
    &includeTVs=`tv1`
    &tvFilters=`tv1==123` //фильтр по tv. если tv1 равно 123
    &setTotal=`1`
    &totalVar=`total` //имя плейсхолдера для вывода количества результатов
]]

RewriteCond %{HTTP_HOST} !^site\.com [NC]

RewriteCond %{HTTP_HOST} !^site\.com$ [NC]

RewriteCond %{HTTP_HOST} !^domain\.zone$
RewriteRule ^(.*)$ http://domain.zone/$1 [L,R=301]

Класс уровня меню. Например если укажите «level», то будет «level1», «level2» и т.д.

li.level3 {
    list-style: none;
}
li.level3>a {
    display: none;
}