Export YAML to .po

podumper.php

<?php
ini_set('display_errors', true);
require '../vendor/autoload.php';

use Symfony\Component\Translation\Loader\YamlFileLoader,
    Symfony\Component\Translation\Loader\XliffFileLoader,
    Symfony\Component\Translation\MessageCatalogue,
    Symfony\Component\Translation\Dumper\PoFileDumper;
use Symfony\Component\Yaml\Yaml;

$exportPath = __DIR__ . '/transPath/Lang';

$yloader = new YamlFileLoader();
$xloader = new XliffFileLoader();
$iterator = new FilesystemIterator(dirname(__FILE__) . 'srcPath');
$yfilter = new RegexIterator($iterator, '/\.(lcode\.yml)$/');
$xfilter = new RegexIterator($iterator, '/\.(lcode\.xliff)$/');
$dumper = new PoFileDumper();
foreach ($yfilter as $file) {
    $name = $file->getBasename('.yml');
    list($domain, $locale) = explode('.', $name);
    $array = $yloader->load($file->getPathname(), $locale, $domain);
    $catalogue = new MessageCatalogue($locale);
    $catalogue->addCatalogue($array);

    $dumper->dump($catalogue, array('path'=> $exportPath));
}
foreach ($xfilter as $file) {
    $name = $file->getBasename('.xliff');
    list($domain, $locale) = explode('.', $name);
    $array = $xloader->load($file->getPathname(), $locale, $domain);
    $catalogue = new MessageCatalogue($locale);
    $catalogue->addCatalogue($array);

    $dumper->dump($catalogue, array('path'=> $exportPath));
}
echo 'Done';