Official OLX documentation about the OLX feed, can be found here
Using composer
$ composer require zephia/olx
<?php
// Instantiate serializer with configurations.
$serializer = \JMS\Serializer\SerializerBuilder::create()
->addMetadataDir(__DIR__ . '/resources/config/serializer')
->build();
// Generate document feed
$document = new Zephia\OLXFeed\Document($serializer);
// Generate Ad list
$adBag = new \Zephia\OLXFeed\Entity\AdBag;
$document->generate($adBag);
// <?xml version="1.0" encoding="UTF-8"?>
// <ads/>