Subversion-Projekte lars-tiefland.laravel_shop

<?php

/**
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */

declare(strict_types=1);

namespace Nette\Utils;

use Nette;


/**
 * Secure random string generator.
 */
final class Random
{
        use Nette\StaticClass;

        /**
         * Generates a random string of given length from characters specified in second argument.
         * Supports intervals, such as `0-9` or `A-Z`.
         */
        public static function generate(int $length = 10, string $charlist = '0-9a-z'): string
        {
                $charlist = count_chars(preg_replace_callback('#.-.#', function (array $m): string {
                        return implode('', range($m[0][0], $m[0][2]));
                }, $charlist), 3);
                $chLen = strlen($charlist);

                if ($length < 1) {
                        throw new Nette\InvalidArgumentException('Length must be greater than zero.');
                } elseif ($chLen < 2) {
                        throw new Nette\InvalidArgumentException('Character list must contain at least two chars.');
                }

                $res = '';
                for ($i = 0; $i < $length; $i++) {
                        $res .= $charlist[random_int(0, $chLen - 1)];
                }

                return $res;
        }
}