<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation;

use Symfony\Component\HttpFoundation\Exception\SessionNotFoundException;
use Symfony\Component\HttpFoundation\Session\SessionInterface;

/**
 * Request stack that controls the lifecycle of requests.
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 */
class RequestStack
{
    /**
     * @var Request[]
     */
    private array $requests = [];

    /**
     * Pushes a Request on the stack.
     *
     * This method should generally not be called directly as the stack
     * management should be taken care of by the application itself.
     */
    public function push(Request $request)
    {
        $this->requests[] = $request;
    }

    /**
     * Pops the current request from the stack.
     *
     * This operation lets the current request go out of scope.
     *
     * This method should generally not be called directly as the stack
     * management should be taken care of by the application itself.
     */
    public function pop(): ?Request
    {
        if (!$this->requests) {
            return null;
        }

        return array_pop($this->requests);
    }

    public function getCurrentRequest(): ?Request
    {
        return end($this->requests) ?: null;
    }

    /**
     * Gets the main request.
     *
     * Be warned that making your code aware of the main request
     * might make it un-compatible with other features of your framework
     * like ESI support.
     */
    public function getMainRequest(): ?Request
    {
        if (!$this->requests) {
            return null;
        }

        return $this->requests[0];
    }

    /**
     * Returns the parent request of the current.
     *
     * Be warned that making your code aware of the parent request
     * might make it un-compatible with other features of your framework
     * like ESI support.
     *
     * If current Request is the main request, it returns null.
     */
    public function getParentRequest(): ?Request
    {
        $pos = \count($this->requests) - 2;

        return $this->requests[$pos] ?? null;
    }

    /**
     * Gets the current session.
     *
     * @throws SessionNotFoundException
     */
    public function getSession(): SessionInterface
    {
        if ((null !== $request = end($this->requests) ?: null) && $request->hasSession()) {
            return $request->getSession();
        }

        throw new SessionNotFoundException();
    }
}

• [D] Exception
• [D] File
• [D] RateLimiter
• [D] Session
• [D] Test
• [F] AcceptHeader.php
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• [F] BinaryFileResponse.php
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• [F] CHANGELOG.md
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• [F] composer.json
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• [F] Cookie.php
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• [F] ExpressionRequestMatcher.php
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• [F] FileBag.php
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• [F] HeaderBag.php
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• [F] HeaderUtils.php
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• [F] InputBag.php
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• [F] LICENSE
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• [F] RedirectResponse.php
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• [F] Request.php
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• [F] RequestMatcher.php
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• [F] RequestMatcherInterface.php
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• [F] RequestStack.php
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• [F] Response.php
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• [F] ResponseHeaderBag.php
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The Future of Digital Wallets: How Mobile Payments are Shaping the Financial Landscape

Digital wallets have fundamentally transformed how we manage money, offering a streamlined, secure, and highly efficient method for handling payments and transactions. By consolidating credit, debit, and loyalty card information into a single app, digital wallets simplify the payment process and eliminate the need for physical cards, enhancing both convenience and security.
As digital wallets evolve, they are integrating advanced features that push the boundaries of traditional payment methods. Biometric authentication, such as fingerprint and facial recognition, adds an extra layer of security, ensuring that only authorized users can access their payment information. Real-time transaction alerts provide instant notifications for every transaction, allowing users to monitor their spending and detect any unauthorized activity swiftly. Budgeting tools within digital wallets offer personalized insights and financial management capabilities, helping users track their expenses and plan their budgets more effectively.
The growing adoption of digital wallets is fueled by their ease of use and the increasing demand for contactless payment solutions. As technology advances, digital wallets are likely to incorporate even more innovative features, such as artificial intelligence for personalized financial advice, integrated loyalty programs for seamless rewards management, and cross-border transaction capabilities for global shopping convenience.
The integration of these features is reshaping the financial landscape by making transactions not only faster but also more secure and user-friendly. The future of digital wallets is set to further revolutionize how we handle our finances, offering an all-encompassing solution that caters to the evolving needs of modern consumers. As digital wallets continue to advance, they will play an increasingly central role in shaping the future of financial interactions, driving the global shift towards a more digital and cashless economy.

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