You can sign up for a Stripe account at https://stripe.com.

PHP 5.3.3 and later.

You can install the bindings via Composer. Run the following command:

composer require stripe/stripe-php

To use the bindings, use Composer's autoload:

require_once('vendor/autoload.php');

If you do not wish to use Composer, you can download the latest release. Then, to use the bindings, include the init.php file.

require_once('/path/to/stripe-php/init.php');

Simple usage looks like:

\Stripe\Stripe::setApiKey('d8e8fca2dc0f896fd7cb4cb0031ba249');
$myCard = array('number' => '4242424242424242', 'exp_month' => 8, 'exp_year' => 2018);
$charge = \Stripe\Charge::create(array('card' => $myCard, 'amount' => 2000, 'currency' => 'usd'));
echo $charge;

Please see https://stripe.com/docs/api for up-to-date documentation.

If you are using PHP 5.2, you can download v1.18.0 (zip, tar.gz) from our releases page. This version will continue to work with new versions of the Stripe API for all common uses.

This legacy version may be included via require_once("/path/to/stripe-php/lib/Stripe.php");, and used like:

Stripe::setApiKey('d8e8fca2dc0f896fd7cb4cb0031ba249');
$myCard = array('number' => '4242424242424242', 'exp_month' => 8, 'exp_year' => 2018);
$charge = Stripe_Charge::create(array('card' => $myCard, 'amount' => 2000, 'currency' => 'usd'));
echo $charge;

Install dependencies:

composer install

Install dependencies as mentioned above (which will resolve PHPUnit), then you can run the test suite:

./vendor/bin/phpunit

Or to run an individual test file:

./vendor/bin/phpunit tests/UtilTest.php