README

Requirements

PHP 5.6 and later.

Even if it is not a corresponding version, it may work, but it does not support it. Due to the PHP END OF LIFE cycle.

Composer

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

{
  "require": {
    "payjp/payjp-php": "~1.0"
  }
}

Then install via:

composer install

To use the bindings, use Composer's autoload:

require_once 'vendor/autoload.php';

Manual Installation

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/payjp-php/init.php';

Getting Started

In advance, you need to get a token by Checkout or payjp.js.

\Payjp\Payjp::setApiKey('sk_test_c62fade9d045b54cd76d7036');
$charge = \Payjp\Charge::create(array(
  'card' => 'token_id_by_Checkout_or_payjp-js',
  'amount' => 2000,
  'currency' => 'jpy'
));
echo $charge->amount; // 2000

Documentation

• Request Example
• Please see our official documentation.

Retry on HTTP Status Code 429

• See Rate Limit Guideline
• When you exceeded rate-limit, you can retry request by setting $maxRetry
  like \Payjp\Payjp::setMaxRetry(3); .
• The retry interval base value is $retryInitialDelay
  Adjust the value like \Payjp\Payjp::setRetryInitialDelay(4);
  The smaller is shorter.
• The retry interval calcurating is based on "Exponential backoff with equal jitter" algorithm.
  See https://aws.amazon.com/jp/blogs/architecture/exponential-backoff-and-jitter/

Logging

• This library provides simple log output using error_log . You can set any logger that is compatible PSR-3 logger interface. Like below
• \Payjp\Payjp::setLogger($logger);
• As the default behavior, this library output only error level information to stderr.

Logging Case

info

• Every retry on HTTP Status Code 429

error

• When you access inaccessible or non-existing property

Tests

In order to run tests first install PHPUnit via Composer:

composer update --dev

To run the test suite:

./vendor/bin/phpunit