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

PHP 5.2 and later.

You can install the bindings via Composer. Add this to your composer.json:

{
  "require": {
    "stripe/stripe-php": "1.*"
  }
}

Then install via:

composer.phar install

To use the bindings, either user Composer’s autoload:

require_once('vendor/autoload.php');

Or manually:

require_once('/path/to/vendor/stripe/stripe-php/lib/Stripe.php');

Obtain the latest version of the Stripe PHP bindings with:

git clone https://github.com/stripe/stripe-php

To use the bindings, add the following to your PHP script:

require_once("/path/to/stripe-php/lib/Stripe.php");

Simple usage looks like:

Stripe::setApiKey('d8e8fca2dc0f896fd7cb4cb0031ba249');
$myCard = array('number' => '4242424242424242', 'exp_month' => 5, 'exp_year' => 2015);
$charge = Stripe_Charge::create(array('card' => $myCard, 'amount' => 2000, 'currency' => 'usd'));
echo $charge;

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

In order to run tests you have to install SimpleTest via Composer (recommended way):

composer.phar update --dev

Run test suite:

php ./test/Stripe.php