/home/kueuepay/www/vendor/guzzlehttp/promises/src/TaskQueue.php
<?php

declare(strict_types=1);

namespace GuzzleHttp\Promise;

/**
 * A task queue that executes tasks in a FIFO order.
 *
 * This task queue class is used to settle promises asynchronously and
 * maintains a constant stack size. You can use the task queue asynchronously
 * by calling the `run()` function of the global task queue in an event loop.
 *
 *     GuzzleHttp\Promise\Utils::queue()->run();
 *
 * @final
 */
class TaskQueue implements TaskQueueInterface
{
    private $enableShutdown = true;
    private $queue = [];

    public function __construct(bool $withShutdown = true)
    {
        if ($withShutdown) {
            register_shutdown_function(function (): void {
                if ($this->enableShutdown) {
                    // Only run the tasks if an E_ERROR didn't occur.
                    $err = error_get_last();
                    if (!$err || ($err['type'] ^ E_ERROR)) {
                        $this->run();
                    }
                }
            });
        }
    }

    public function isEmpty(): bool
    {
        return !$this->queue;
    }

    public function add(callable $task): void
    {
        $this->queue[] = $task;
    }

    public function run(): void
    {
        while ($task = array_shift($this->queue)) {
            /** @var callable $task */
            $task();
        }
    }

    /**
     * The task queue will be run and exhausted by default when the process
     * exits IFF the exit is not the result of a PHP E_ERROR error.
     *
     * You can disable running the automatic shutdown of the queue by calling
     * this function. If you disable the task queue shutdown process, then you
     * MUST either run the task queue (as a result of running your event loop
     * or manually using the run() method) or wait on each outstanding promise.
     *
     * Note: This shutdown will occur before any destructors are triggered.
     */
    public function disableShutdown(): void
    {
        $this->enableShutdown = false;
    }
}
Path: home/kueuepay/www/vendor/guzzlehttp/promises/src
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Kueue Pay Payment Gateway Solutions Developer API Documentation

Welcome to the Kueue Pay Payment Gateway Solutions Developer API Documentation. This comprehensive guide will empower you to seamlessly integrate our advanced payment gateway into your website, enhancing your customers’ payment experience and enabling efficient transaction processing. The Kueue Pay Developer API is designed for developers and entrepreneurs who seek simplicity, security, and reliability in their payment processing solutions.

1. Introduction

The Kueue Pay Developer API allows you to seamlessly integrate Kueue Pay’s Payment Gateway Solutions into your website, enabling secure and efficient debit and credit card transactions. With our API, you can initiate payments, check payment statuses, and even process refunds, all while ensuring a smooth and streamlined payment experience for your customers.

Prerequisites