Nén PDF trong PHP SDK

    require __DIR__.'vendor\autoload.php';

    use Aspose\PDF\Configuration;
    use Aspose\PDF\Api\PdfApi;

    $credentials = json_decode(file_get_contents(__DIR__ . 'credentials.json'), true);

    $configParams = [
        "LOCAL_FOLDER" => "C:\\Samples\\",
        "PDF_DOCUMENT_NAME" => "sample.pdf",
        "TEMP_FOLDER" => "TempPdfCloud",
        "LOCAL_RESULT_DOCUMENT_NAME" => "output_sample.pdf",
    ];

    class PdfCompress
    {
        private $pdfApi;
        private $configParams;

        private function _create_rest_api() {
            $credentials = json_decode(file_get_contents("credentials.json"), true);

            $configAuth = new Configuration();
            $configAuth->setAppKey($credentials['key']);
            $configAuth->setAppSid($credentials['id']);

            $this->pdfApi = new PdfApi(null, $configAuth);
        }

        public function __construct($config) {
            $this->configParams = $config;
            $this->_create_rest_api();
        }

        public function uploadDocument()
        {
            $filePath = $this->configParams["LOCAL_FOLDER"] . DIRECTORY_SEPARATOR . $this->configParams["PDF_DOCUMENT_NAME"];
            $fileData = file_get_contents($filePath);

            $storagePath = $this->configParams["TEMP_FOLDER"] . DIRECTORY_SEPARATOR . $this->configParams["PDF_DOCUMENT_NAME"];

            $this->pdfApi->uploadFile($storagePath, $fileData);
            echo "File: '{$this->configParams["PDF_DOCUMENT_NAME"]}' successfully uploaded." . PHP_EOL;
        }

        public function downloadResult()
        {
            $fileName = $this->configParams["TEMP_FOLDER"] . DIRECTORY_SEPARATOR . $this->configParams["PDF_DOCUMENT_NAME"];
            $downloaded = $this->pdfApi->downloadFile($fileName);

            $filePath = $this->configParams["LOCAL_FOLDER"] . DIRECTORY_SEPARATOR . $this->configParams["LOCAL_RESULT_DOCUMENT_NAME"];
            file_put_contents($filePath, $downloaded);
            echo "Downloaded: {$filePath}" . PHP_EOL;
        }

        public function compressPdfDocument()
        {
            $options = new \Aspose\PDF\Model\OptimizeOptions();
            $options->setAllowReusePageContent(true);
            $options->setCompressImages(true);
            $options->setImageQuality(100);
            $options->setLinkDuplcateStreams(true);
            $options->setRemoveUnusedObjects(true);
            $options->setRemoveUnusedStreams(true);
            $options->setUnembedFonts(true);

            $response = $this->pdfApi->postOptimizeDocument(
                $this->configParams["PDF_DOCUMENT_NAME"],
                $options,
                null,
                $this->configParams["TEMP_FOLDER"]
            );

            if ($response->getCode() != 200) {
                echo "compressPdfDocument(): Failed to compress the PDF document!" . PHP_EOL;
            } else {
                echo "compressPdfDocument(): Successfully compressed the PDF document '{$this->configParams["PDF_DOCUMENT_NAME"]}' !" . PHP_EOL;
            }
        }
    }

    try {
        $compressor = new PdfCompress($pdfApi, $configParams);
        $compressor->uploadDocument();
        $compressor->compressPdfDocument();
        $compressor->downloadResult();
    } catch (Exception $e) {
        echo "Error: " . $e->getMessage() . PHP_EOL;
    }