<?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;
/**
* HeaderBag is a container for HTTP headers.
*
* @author Fabien Potencier <fabien@symfony.com>
*
* @implements \IteratorAggregate<string, list<string|null>>
*/
class HeaderBag implements \IteratorAggregate, \Countable
{
protected const UPPER = '_ABCDEFGHIJKLMNOPQRSTUVWXYZ';
protected const LOWER = '-abcdefghijklmnopqrstuvwxyz';
/**
* @var array<string, list<string|null>>
*/
protected $headers = [];
protected $cacheControl = [];
public function __construct(array $headers = [])
{
foreach ($headers as $key => $values) {
$this->set($key, $values);
}
}
/**
* Returns the headers as a string.
*/
public function __toString(): string
{
if (!$headers = $this->all()) {
return '';
}
ksort($headers);
$max = max(array_map('strlen', array_keys($headers))) + 1;
$content = '';
foreach ($headers as $name => $values) {
$name = ucwords($name, '-');
foreach ($values as $value) {
$content .= sprintf("%-{$max}s %s\r\n", $name.':', $value);
}
}
return $content;
}
/**
* Returns the headers.
*
* @param string|null $key The name of the headers to return or null to get them all
*
* @return array<string, array<int, string|null>>|array<int, string|null>
*/
public function all(string $key = null): array
{
if (null !== $key) {
return $this->headers[strtr($key, self::UPPER, self::LOWER)] ?? [];
}
return $this->headers;
}
/**
* Returns the parameter keys.
*
* @return string[]
*/
public function keys(): array
{
return array_keys($this->all());
}
/**
* Replaces the current HTTP headers by a new set.
*/
public function replace(array $headers = [])
{
$this->headers = [];
$this->add($headers);
}
/**
* Adds new headers the current HTTP headers set.
*/
public function add(array $headers)
{
foreach ($headers as $key => $values) {
$this->set($key, $values);
}
}
/**
* Returns the first header by name or the default one.
*/
public function get(string $key, string $default = null): ?string
{
$headers = $this->all($key);
if (!$headers) {
return $default;
}
if (null === $headers[0]) {
return null;
}
return (string) $headers[0];
}
/**
* Sets a header by name.
*
* @param string|string[]|null $values The value or an array of values
* @param bool $replace Whether to replace the actual value or not (true by default)
*/
public function set(string $key, string|array|null $values, bool $replace = true)
{
$key = strtr($key, self::UPPER, self::LOWER);
if (\is_array($values)) {
$values = array_values($values);
if (true === $replace || !isset($this->headers[$key])) {
$this->headers[$key] = $values;
} else {
$this->headers[$key] = array_merge($this->headers[$key], $values);
}
} else {
if (true === $replace || !isset($this->headers[$key])) {
$this->headers[$key] = [$values];
} else {
$this->headers[$key][] = $values;
}
}
if ('cache-control' === $key) {
$this->cacheControl = $this->parseCacheControl(implode(', ', $this->headers[$key]));
}
}
/**
* Returns true if the HTTP header is defined.
*/
public function has(string $key): bool
{
return \array_key_exists(strtr($key, self::UPPER, self::LOWER), $this->all());
}
/**
* Returns true if the given HTTP header contains the given value.
*/
public function contains(string $key, string $value): bool
{
return \in_array($value, $this->all($key));
}
/**
* Removes a header.
*/
public function remove(string $key)
{
$key = strtr($key, self::UPPER, self::LOWER);
unset($this->headers[$key]);
if ('cache-control' === $key) {
$this->cacheControl = [];
}
}
/**
* Returns the HTTP header value converted to a date.
*
* @throws \RuntimeException When the HTTP header is not parseable
*/
public function getDate(string $key, \DateTime $default = null): ?\DateTimeInterface
{
if (null === $value = $this->get($key)) {
return $default;
}
if (false === $date = \DateTime::createFromFormat(\DATE_RFC2822, $value)) {
throw new \RuntimeException(sprintf('The "%s" HTTP header is not parseable (%s).', $key, $value));
}
return $date;
}
/**
* Adds a custom Cache-Control directive.
*/
public function addCacheControlDirective(string $key, bool|string $value = true)
{
$this->cacheControl[$key] = $value;
$this->set('Cache-Control', $this->getCacheControlHeader());
}
/**
* Returns true if the Cache-Control directive is defined.
*/
public function hasCacheControlDirective(string $key): bool
{
return \array_key_exists($key, $this->cacheControl);
}
/**
* Returns a Cache-Control directive value by name.
*/
public function getCacheControlDirective(string $key): bool|string|null
{
return $this->cacheControl[$key] ?? null;
}
/**
* Removes a Cache-Control directive.
*/
public function removeCacheControlDirective(string $key)
{
unset($this->cacheControl[$key]);
$this->set('Cache-Control', $this->getCacheControlHeader());
}
/**
* Returns an iterator for headers.
*
* @return \ArrayIterator<string, list<string|null>>
*/
public function getIterator(): \ArrayIterator
{
return new \ArrayIterator($this->headers);
}
/**
* Returns the number of headers.
*/
public function count(): int
{
return \count($this->headers);
}
protected function getCacheControlHeader()
{
ksort($this->cacheControl);
return HeaderUtils::toString($this->cacheControl, ',');
}
/**
* Parses a Cache-Control HTTP header.
*/
protected function parseCacheControl(string $header): array
{
$parts = HeaderUtils::split($header, ',=');
return HeaderUtils::combine($parts);
}
}
At NFC Pay, we strive to provide a seamless and satisfactory experience with our services. This Refund Policy outlines the circumstances under which refunds may be issued for transactions made through our platform. Please read this policy carefully to understand your rights regarding refunds.
1. Eligibility for Refunds
Refunds may be considered under the following circumstances:
2. Non-Refundable Situations
Refunds will generally not be issued in the following situations:
3. Refund Process
To request a refund, please follow these steps:
4. Refund Exceptions
Certain transactions may be subject to specific terms and conditions, including non-refundable fees or charges. Please review the terms associated with each transaction carefully, as some fees may not be eligible for refunds.
5. Modifications to the Refund Policy
NFC Pay reserves the right to modify this Refund Policy at any time. Changes will be communicated through updates on our website and app, and the effective date will be updated accordingly. We encourage you to review this policy periodically to stay informed about our refund practices.
By using NFC Pay, you agree to this Refund Policy and understand the terms under which refunds may be issued. Our goal is to ensure a fair and transparent refund process, providing you with confidence and peace of mind when using our services.