<?php
/**
 * Whoops - php errors for cool kids
 * @author Filipe Dobreira <http://github.com/filp>
 */

namespace Whoops\Exception;

use ArrayAccess;
use ArrayIterator;
use Countable;
use IteratorAggregate;
use ReturnTypeWillChange;
use Serializable;
use UnexpectedValueException;

/**
 * Exposes a fluent interface for dealing with an ordered list
 * of stack-trace frames.
 */
class FrameCollection implements ArrayAccess, IteratorAggregate, Serializable, Countable
{
    /**
     * @var array[]
     */
    private $frames;

    public function __construct(array $frames)
    {
        $this->frames = array_map(function ($frame) {
            return new Frame($frame);
        }, $frames);
    }

    /**
     * Filters frames using a callable, returns the same FrameCollection
     *
     * @param  callable        $callable
     * @return FrameCollection
     */
    public function filter($callable)
    {
        $this->frames = array_values(array_filter($this->frames, $callable));
        return $this;
    }

    /**
     * Map the collection of frames
     *
     * @param  callable        $callable
     * @return FrameCollection
     */
    public function map($callable)
    {
        // Contain the map within a higher-order callable
        // that enforces type-correctness for the $callable
        $this->frames = array_map(function ($frame) use ($callable) {
            $frame = call_user_func($callable, $frame);

            if (!$frame instanceof Frame) {
                throw new UnexpectedValueException(
                    "Callable to " . __CLASS__ . "::map must return a Frame object"
                );
            }

            return $frame;
        }, $this->frames);

        return $this;
    }

    /**
     * Returns an array with all frames, does not affect
     * the internal array.
     *
     * @todo   If this gets any more complex than this,
     *         have getIterator use this method.
     * @see    FrameCollection::getIterator
     * @return array
     */
    public function getArray()
    {
        return $this->frames;
    }

    /**
     * @see IteratorAggregate::getIterator
     * @return ArrayIterator
     */
    #[ReturnTypeWillChange]
    public function getIterator()
    {
        return new ArrayIterator($this->frames);
    }

    /**
     * @see ArrayAccess::offsetExists
     * @param int $offset
     */
    #[ReturnTypeWillChange]
    public function offsetExists($offset)
    {
        return isset($this->frames[$offset]);
    }

    /**
     * @see ArrayAccess::offsetGet
     * @param int $offset
     */
    #[ReturnTypeWillChange]
    public function offsetGet($offset)
    {
        return $this->frames[$offset];
    }

    /**
     * @see ArrayAccess::offsetSet
     * @param int $offset
     */
    #[ReturnTypeWillChange]
    public function offsetSet($offset, $value)
    {
        throw new \Exception(__CLASS__ . ' is read only');
    }

    /**
     * @see ArrayAccess::offsetUnset
     * @param int $offset
     */
    #[ReturnTypeWillChange]
    public function offsetUnset($offset)
    {
        throw new \Exception(__CLASS__ . ' is read only');
    }

    /**
     * @see Countable::count
     * @return int
     */
    #[ReturnTypeWillChange]
    public function count()
    {
        return count($this->frames);
    }

    /**
     * Count the frames that belongs to the application.
     *
     * @return int
     */
    public function countIsApplication()
    {
        return count(array_filter($this->frames, function (Frame $f) {
            return $f->isApplication();
        }));
    }

    /**
     * @see Serializable::serialize
     * @return string
     */
    #[ReturnTypeWillChange]
    public function serialize()
    {
        return serialize($this->frames);
    }

    /**
     * @see Serializable::unserialize
     * @param string $serializedFrames
     */
    #[ReturnTypeWillChange]
    public function unserialize($serializedFrames)
    {
        $this->frames = unserialize($serializedFrames);
    }

    public function __serialize()
    {
        return $this->frames;
    }

    public function __unserialize(array $serializedFrames)
    {
        $this->frames = $serializedFrames;
    }

    /**
     * @param Frame[] $frames Array of Frame instances, usually from $e->getPrevious()
     */
    public function prependFrames(array $frames)
    {
        $this->frames = array_merge($frames, $this->frames);
    }

    /**
     * Gets the innermost part of stack trace that is not the same as that of outer exception
     *
     * @param  FrameCollection $parentFrames Outer exception frames to compare tail against
     * @return Frame[]
     */
    public function topDiff(FrameCollection $parentFrames)
    {
        $diff = $this->frames;

        $parentFrames = $parentFrames->getArray();
        $p = count($parentFrames)-1;

        for ($i = count($diff)-1; $i >= 0 && $p >= 0; $i--) {
            /** @var Frame $tailFrame */
            $tailFrame = $diff[$i];
            if ($tailFrame->equals($parentFrames[$p])) {
                unset($diff[$i]);
            }
            $p--;
        }
        return $diff;
    }
}

• [F] ErrorException.php
  Delete
• [F] Formatter.php
  Delete
• [F] Frame.php
  Delete
• [F] FrameCollection.php
  Delete
• [F] Inspector.php
  Delete

About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

• Simplifying Payments, One Tap at a Time.
• Reinventing Your Wallet for Modern Convenience.
• Smart Payments for a Effortless Lifestyle.
• Experience the Ease of Tap and Pay.
• Innovative Solutions for Your Daily Transactions.

FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

Download the app and sign up using your email or phone number, then complete the verification process.

Is my payment information secure?

Yes, we use advanced encryption and security protocols to protect your payment details.

Can I add multiple cards to my NFC Pay wallet?

Absolutely, you can link multiple debit or credit cards to your wallet.

How do I transfer money to another user?

Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.

What should I do if I forget my PIN?

Use the “Forgot PIN” feature in the app to reset it following the provided instructions.

How can I activate my merchant account?

Sign up for a merchant account through the app and follow the setup instructions to start accepting payments.

Can I track my payment status?

Yes, you can view and track your payment status in the account dashboard