documentação da API

<?php
require_once(__DIR__ . '/vendor/autoload.php');


$apiKey = 'myApiKey';

$client = new Webpractik\OcfConverter\Sdk\OcfClient($apiKey);

$filePath = '/path/to/file/to/convert.png';
$extensionToConvertTo = 'pdf';

try {
    $task = $client->uploadFile($filePath, $extensionToConvertTo);

    $result = $task->waitForConversion();

    if ($result->isSuccess()) {
        $resultUrl = $result->getResultingFileUrl();

        $resultFileName = basename($resultUrl);

        if (file_put_contents($resultFileName, file_get_contents($resultUrl))) {
            $result->deleteFile();
        }
    }
} catch (Exception $e) {
    echo 'Exception: ', $e->getMessage(), PHP_EOL;
}