PHP client for pdffiller.com REST API


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System Requirements

  • PHP >= 7.0 but the latest stable version of PHP is recommended;
  • mbstring extension;
  • intl extension;


The library is available on Packagist and can be installed using Composer. This is done by running the following command on a composer installed box:

$ composer require pdffiller/pdffiller-php-api-client

Most modern frameworks include Composer out of the box. However, please ensure that the following file is included:

// Include the Composer autoloader
require 'vendor/autoload.php';


If you have the following error:

 Could not load package pdffiller/pdffiller-php-api-client in http://packagi
 st.org: [UnexpectedValueException] Could not parse version constraint ^5.2:
  Invalid version string "^5.2"

 Could not parse version constraint ^5.2: Invalid version string "^5.2"

Try running

composer self-update 

Also you might encounter the following:

Warning: require_once(../../vendor/autoload.php): failed to open stream: No such file or directory

This issue is easily fixed by installing composer dependencies:

composer install

Quick getting started steps

Install required libraries using composer

cd pdffiller-php-api-client/
composer install

Edit .env file in examples directory setting client_id, client_secret, username and password (for authorization via password_grant)

cd examples/ 
cp .env.example .env
vi .env

Run any example

cd signature_request/
php 1_get_signature_request_list.php


Access tokens automatically initialize when they’re successfully retrieved from the given user's credentials (after PDFfiller\OAuth2\Client\Provider\PDFfiller::getAccessToken($grant_type, $options) method), according to the example below:

require_once __DIR__.'/vendor/autoload.php';

use \PDFfiller\OAuth2\Client\Provider\Enums\GrantType;
use \PDFfiller\OAuth2\Client\Provider\PDFfiller;

$oauthParams = [
    'clientId'       => 'YOUR_CLIENT_ID',
    'clientSecret'   => 'YOUR_CLIENT_SECRET',
    'urlAccessToken' => 'https://api.pdffiller.com/v2/oauth/token',
    'urlApiDomain'   => 'https://api.pdffiller.com/v2/'

$passwordGrantCredentials = [
    'username' => 'pdffiller_account@example.com',
    'password' => 'some_pass'

/** @var \PDFfiller\OAuth2\Client\Provider\PDFfiller $provider */
$provider = new PDFfiller($oauthParams);

$accessToken = $provider->getAccessToken(GrantType::PASSWORD_GRANT, $passwordGrantCredentials);

When your authorization has been completed successfully you can use the provider for retrieving, creating, updating or deleting information from your profile.


Use a static method to retrieve a list of all applications: PDFfiller\OAuth2\Client\Provider\Core\Model::all(PDFfiller $provider)

$list = Application::all($provider);

For retrieving information about one application, call static: PDFfiller\OAuth2\Client\Provider\Core\Model::one(PDFfiller $provider, $appClientId)

$application = Application::one($provider, 'app_client_id');

If you want to create a new application, you must create a new Application object with the necessary information and save it using the following method: PDFfiller\OAuth2\Client\Provider\Core\Model::save()

$application = new Application($provider);

$application->name = 'App name';
$application->description = 'Some application description';
$application->domain = 'http://some.domain.com';

If you want to update an instance, you must retrieve an Application object and save it by using the following method: PDFfiller\OAuth2\Client\Provider\Core\Model::save()

$application = Application::one($provider, 'app_client_id');

$application->name = 'Updated App name';
$application->description = 'Some changed application description';
$result = $application->save();

Updating information is easy by using: PDFfiller\OAuth2\Client\Provider\Core\Model::save() method. If you wish to remove an application, use: PDFfiller\OAuth2\Client\Provider\Core\Model::remove() method

$application = Application::one($provider, 'app_client_id');
$result = $application->remove();

All examples with other endpoints are available in the examples folder


If you have any problems feel free to contact us:


This software is licensed under the following MIT license


API Team (integrations@pdffiller.com)