Павел Романов

....
$new_tv = json_encode($arr); //переводим итоговый массив в JSON-строку.
$modx->log(modX::LOG_LEVEL_ERROR, $new_tv );
....

<?php
$arr = explode(',', $value);
foreach($arr as $id){
    if(!$res = $modx->getObject('modResource', $id)) continue;
    $out[] = $res->get('pagetitle').' - '.$res->get('longtitle');
}
return implode(', ', $out);

<?php
$arr = explode(',', $value);
foreach($arr as $id){
    if(!$res = $modx->getObject('modResource', $id)) continue;
    $out .= $modx->getChunk('collection_item', array(
        'pagetitle' => $res->get('pagetitle'),
        'longtitle' => $res->get('longtitle')
}
return $out;

<div>
    <b>[[+pagetitle]]</b> <i>[[+longtitle]]</i>
</div>

$product->save();

<?php
if(!$res = $modx->getObject('modResource', $value)) return $value;
return $res->get('pagetitle');

<?php
foreach ($modx->getIterator('modContextSetting', array('key' => 'site_url')) as $ctx) {
    $ctx->set('value', 'https://'.$context->key.'. новый домен.ru/');
    $ctx->save();
}

$modx->setPlaceholder('placeholder_name', $value);

[[$chunk_name? &pls=`[[+placeholder_name]]`]]

[[Snippet?
&pls=`[[+pls]]`
...
]]

$pls = $modx->getPlaceholder('placeholder_name');

[[~5:tag]]

<script>
       	$(document).on('af_complete', function(event, response) {
            var form = response.form;
            if (form.attr('id') == 'callback-form' && response.success) {
               window.location.href = "[[~25]]"
            }
        });
</script>

[[+image_absolute:replace=`///==/`]]

{$image_standard_resolution}