xml to csv

<?php
$csv2 = __DIR__ . '/output.csv';
$xml2 = __DIR__ . '/input.xml';

$xml = file_get_contents($xml2);
$priceListAsXml = SimpleXML_Load_String($xml);

// https://stackoverflow.com/a/20431742
$priceListAsArray = json_decode(json_encode($priceListAsXml),TRUE);

$csvOutput[] = implode(';', array_keys($priceListAsArray['arak']['ar'][0]));

foreach($priceListAsArray['arak']['ar'] as $item)
{
    $item['listaar'] *= 1.1;

    $csvOutput[] = implode(';', $item);
}

$fpw = fopen($csv2, 'w');
if (!$fpw) trigger_error("UNABLE TO OPEN $csv2", E_USER_ERROR);
file_put_contents($csv2,implode(PHP_EOL, $csvOutput));