Oinktube/plugin/PayPalYPT/PayPalClient.php

<?php
use PaypalPayoutsSDK\Core\PayPalHttpClient;
use PaypalPayoutsSDK\Core\SandboxEnvironment;
use PaypalPayoutsSDK\Core\ProductionEnvironment;

//ini_set('error_reporting', E_ALL); // or error_reporting(E_ALL);
//ini_set('display_errors', '1');
//ini_set('display_startup_errors', '1');
class PayPalClient
{
    /**
     * Returns PayPal HTTP client instance with environment which has access
     * credentials context. This can be used invoke PayPal API's provided the
     * credentials have the access to do so.
     */
    public static function client()
    {
        return new PayPalHttpClient(self::environment());
    }

    /**
     * Setting up and Returns PayPal SDK environment with PayPal Access credentials.
     * For demo purpose, we are using SandboxEnvironment. In production this will be
     * ProductionEnvironment.
     */
    public static function environment()
    {
        $obj = AVideoPlugin::getObjectData("PayPalYPT");
        $clientId = $obj->ClientID;
        $clientSecret = $obj->ClientSecret;
        if (!empty($obj->disableSandbox)) {
            _error_log('PayPalClient Production');
            return new ProductionEnvironment($clientId, $clientSecret);
        } else {
            _error_log('PayPalClient Sandbox');
            return new SandboxEnvironment($clientId, $clientSecret);
        }
    }
}