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;

	}

}