designcise/bitframe

<?php

/**
 * BitFrame Framework (https://www.bitframephp.com)
 *
 * @author    Daniyal Hamid
 * @copyright Copyright (c) 2017-2023 Daniyal Hamid (https://designcise.com)
 * @license   https://bitframephp.com/about/license MIT License
 */

declare(strict_types=1);

namespace BitFrame\Http\Parser;

use function preg_match_all;
use function urldecode;

use const PREG_SET_ORDER;

/**
 * Parse a cookie header according to RFC-6265.
 *
 * PHP will replace special characters in cookie names, which
 * results in other cookies not being available due to
 * overwriting. Thus, the server request should take the cookies
 * from the request header instead.
 */
class HttpCookieParser
{
    public static function parse(string $cookieHeader): array
    {
        preg_match_all('(
            (?:^\\n?[ \t]*|[;: ])
            (?P<name>[!#$%&\'*+-.0-9A-Z^_`a-z|~]+)
            =
            (?P<DQUOTE>"?)
                (?P<value>[\x21\x23-\x2b\x2d-\x3a\x3c-\x5b\x5d-\x7e]*)
            (?P=DQUOTE)
            (?=\\n?[ \t]*$|; )
        )x', $cookieHeader, $matches, PREG_SET_ORDER);

        $cookies = [];

        foreach ($matches as $match) {
            $cookies[$match['name']] = urldecode($match['value']);
        }

        return $cookies;
    }
}