README

Gotenberg PHP

A PHP client for interacting with Gotenberg

This package is a PHP client for Gotenberg, a developer-friendly API to interact with powerful tools like Chromium and LibreOffice for converting numerous document formats (HTML, Markdown, Word, Excel, etc.) into PDF files, and more!

Quick Examples

You may convert a target URL to PDF and save it to a given directory:

use Gotenberg\Gotenberg;

// Converts a target URL to PDF and saves it to a given directory.
$filename = Gotenberg::save(
    Gotenberg::chromium($apiUrl)->pdf()->url('https://my.url'), 
    $pathToSavingDirectory
);

You may also convert Office documents:

use Gotenberg\Gotenberg;
use Gotenberg\Stream;

// Converts Office documents to PDF.
$response = Gotenberg::send(
    Gotenberg::libreOffice($apiUrl)
        ->convert(
            Stream::path($pathToDocx),
            Stream::path($pathToXlsx)
        )
);

Requirement

This packages requires Gotenberg, a Docker-powered stateless API for PDF files.

See the installation guide for more information.

Installation

This package can be installed with Composer:

composer require gotenberg/gotenberg-php

We use PSR-7 HTTP message interfaces (i.e., RequestInterface and ResponseInterface) and the PSR-18 HTTP client interface (i.e., ClientInterface).

For the latter, you may need an adapter in order to use your favorite client library. Check the available adapters:

https://docs.php-http.org/en/latest/clients.html

If you're not sure which adapter you should use, consider using the php-http/guzzle7-adapter:

composer require php-http/guzzle7-adapter

Build a request

This package is organized around modules, namely:

use Gotenberg\Gotenberg;

Gotenberg::chromium($apiUrl);
Gotenberg::libreOffice($apiUrl);
Gotenberg::pdfEngines($apiUrl);

Each of these modules offers a variety of methods to populate a multipart/form-data request.

After setting all optional form fields and files, you can create a request by calling the method that represents the endpoint. For example, to call the /forms/chromium/convert/url route:

use Gotenberg\Gotenberg;

Gotenberg::chromium($apiUrl)
    ->pdf()                  // Or screenshot().
    ->singlePage()           // Optional.
    ->url('https://my.url'));

Tip

Head to the documentation to learn about all possibilities.

If the route requires form files, use the Stream class to create them:

use Gotenberg\DownloadFrom;
use Gotenberg\Gotenberg;
use Gotenberg\Stream;

Gotenberg::libreOffice($apiUrl)
    ->convert(Stream::path($pathToDocument));

// Alternatively, you may also set the content directly.
Gotenberg::chromium($apiUrl)
    ->pdf()
    ->assets(Stream::string('style.css', 'body{font-family: Arial, Helvetica, sans-serif;}'))
    ->html(Stream::string('index.html', '<html><head><link rel="stylesheet" type="text/css" href="style.css"></head><body><p>Hello, world!</p></body></html>'));

// Or create your stream from scratch.
Gotenberg::libreOffice($apiUrl)
    ->convert(new Stream('document.docx', $stream));

// Or even tell Gotenberg to download the files for you.
Gotenberg::libreOffice($apiUrl)
    ->downloadFrom([
        new DownloadFrom('https://url.to.document.docx', ['MyHeader' => 'MyValue'])
    ])
    ->convert();

Send a request to the API

After having created the HTTP request, you have two options:

Get the response from the API and handle it according to your need.
Save the resulting file to a given directory.

Get a response

You may use any HTTP client that is able to handle a PSR-7 RequestInterface to call the API:

use Gotenberg\Gotenberg;

$request = Gotenberg::chromium($apiUrl)
    ->pdf()
    ->url('https://my.url');

$response = $client->sendRequest($request);

If you have a PSR-18 compatible HTTP client (see Installation), you may also use Gotenberg::send:

use Gotenberg\Gotenberg;

$request = Gotenberg::chromium($apiUrl)
    ->pdf()
    ->url('https://my.url');

try {
    $response = Gotenberg::send($request);
    return $response;
} catch (GotenbergApiErrored $e) {
    // $e->getResponse();
}

This helper will parse the response and if it is not 2xx, it will throw an exception. That's especially useful if you wish to return the response directly to the browser.

You may also explicitly set the HTTP client:

use Gotenberg\Gotenberg;

$response = Gotenberg::send($request, $client);

Save the resulting file

If you have a PSR-18 compatible HTTP client (see Installation), you may use Gotenberg::save:

use Gotenberg\Gotenberg;

$request = Gotenberg::chromium($apiUrl)
    ->pdf()
    ->url('https://my.url');
    
$filename = Gotenberg::save($request, '/path/to/saving/directory');

It returns the filename of the resulting file. By default, Gotenberg creates a UUID filename (i.e., 95cd9945-484f-4f89-8bdb-23dbdd0bdea9) with either a .zip or a .pdf file extension.

You may also explicitly set the HTTP client:

use Gotenberg\Gotenberg;

$response = Gotenberg::save($request, $pathToSavingDirectory, $client);

Filename

You may override the output filename with:

use Gotenberg\Gotenberg;

$request = Gotenberg::chromium($apiUrl)
    ->pdf()
    ->outputFilename('my_file')
    ->url('https://my.url');

Gotenberg will automatically add the correct file extension.

Trace or request ID

By default, Gotenberg creates a UUID trace that identifies a request in its logs. You may override its value thanks to:

use Gotenberg\Gotenberg;

$request = Gotenberg::chromium('$apiUrl')
    ->pdf()
    ->trace('debug')
    ->url('https://my.url');

It will set the header Gotenberg-Trace with your value. You may also override the default header name:

use Gotenberg\Gotenberg;

$request = Gotenberg::chromium($apiUrl)
    ->pdf()
    ->trace('debug', 'Request-Id')
    ->url('https://my.url');

Please note that it should be the same value as defined by the --api-trace-header Gotenberg's property.

The response from Gotenberg will also contain the trace header. In case of error, both the Gotenberg::send and Gotenberg::save methods throw a GotenbergApiErroed exception that provides the following method for retrieving the trace:

use Gotenberg\Exceptions\GotenbergApiErrored;
use Gotenberg\Gotenberg;

try {
    $response = Gotenberg::send(
        Gotenberg::chromium($apiUrl)
            ->screenshot()
            ->url('https://my.url')
    );
} catch (GotenbergApiErrored $e) {
    $trace = $e->getGotenbergTrace();
    // Or if you override the header name:
    $trace = $e->getGotenbergTrace('Request-Id');
}

gotenberg / gotenberg-php

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