Snippet to read and parse XML input

XMLooper.php

<?php

# Snippet to read and parse XML input
$sourcePath = $scriptProperties['source'];

if (is_numeric($sourcePath))
{
    $sourcePath = $modx->makeUrl($sourcePath, '', '', 'full');
}

//$output = array();
$outputSeparator = isset($outputSeparator) ? $outputSeparator : "\n";
$getGroup = $modx->getOption('getGroup', $scriptProperties, '');
$cacheKey = basename(str_replace(".xml","",$sourcePath));
$lifetime = $modx->getOption('lifetime', $scriptProperties, 10800);
$source = $modx->cacheManager->get($cacheKey);
$nodeName = $modx->getOption('nodeName', $scriptProperties, 'ROW');
$itemNode = $modx->getOption('itemNode', $scriptProperties, '');
$group = $modx->getOption('group', $scriptProperties, '');
$xpath = $modx->getOption('xpath', $scriptProperties, '//' . $nodeName);
$groupName = $modx->getOption('groupName', $scriptProperties, 'GROUP');
$idxOffset = (int) $modx->getOption('idxOffset', $scriptProperties, 0);

$hideProduct = $scriptProperties['hideProduct'];
$modx->setPlaceholder('hideProduct', $hideProduct);

if ($getGroup)
{
    $xpath = $xpath . '[@' . $groupName . '="' . $getGroup . '"]';
}

$modx->setPlaceholder($groupName, $group);
$modx->setPlaceholder('modDate', strtotime("now"));
$modx->setPlaceholder('UPDATE',$xml->RATE_UPLOAD_DATE);

if ($source)
{
    $modx->log(modX::LOG_LEVEL_DEBUG, 'XMLooper using cached ' . $cacheKey . '.');
}
else
{

    $source = file_get_contents($sourcePath);
    // $ch = curl_init();
    // curl_setopt($ch, CURLOPT_URL, $sourcePath);
    // curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
    // curl_setopt($ch, CURLOPT_FRESH_CONNECT,  true);
    // curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    // $source = curl_exec($ch);
    // curl_close($ch);
    $modx->cacheManager->set($cacheKey, $source, $lifetime);
    $modx->log(modX::LOG_LEVEL_DEBUG, 'XMLooper creating cache ' . $cacheKey . '.');
}

if (empty($source))
{
    $modx->log(modX::LOG_LEVEL_DEBUG, 'Empty source address passed, aborting.');
    return '';
}
else
{
    if ($xml = simplexml_load_string($source))
    {
        $output = '';
		$output = array();
        $i = 0;
        $n = 0;
        $idx = 0;
        $nodeList = explode(',', $itemNode);

        $nodes = $xml->xpath($xpath);

        //print "<pre>";
        //print_r($nodes);
        //print "</pre>";
        foreach ($nodes as $item)
        {
					$modx->setPlaceholder('idxgroup', ($idx+1));
            $attributes = [];
            if ($item->attributes())
            {
                $attributes = (array)$item->attributes();
                $attributes = current($item->attributes());
            }
            $elements = [];
            foreach ($item->children() as $element)
            {
                $elements[$element->getName() ] = is_array($element) ? simplexml_to_array($element) : (string)$element;
            }

            $placeholders = array_merge($attributes, $elements);

            if (isset($scriptProperties['itemNode']))
            {
                if (isset($nodeList[$n]) && $nodeList[$n] == $i)
                {
                    //$output .= $modx->getChunk($scriptProperties['tpl'], $placeholders);
                    $output[] = $modx->getChunk($scriptProperties['tpl'], $placeholders);
                    ++$n;
                    ++$idx;
                }
            }
            else
            {
                //$output .= $modx->getChunk($scriptProperties['tpl'], $placeholders);
                $output[] = $modx->getChunk($scriptProperties['tpl'], $placeholders);
                ++$idx;
            }
            ++$i;
            $modx->setPlaceholder('idx', ($idx + $idxOffset));
        }
    }
    else
    {
        $modx->log(modX::LOG_LEVEL_ERROR, 'XMLooper could not open ' . $source . '.');
        // exit('Could not open ' . $source . '.');
        
    }

    return implode($outputSeparator, $output);
    //return $output;
}