friendship ended with social-app. php is my new best friend
veryroundbird.house
1<?php
2
3/**
4 * This file is part of the Nette Framework (https://nette.org)
5 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
6 */
7
8declare(strict_types=1);
9
10namespace Nette\Utils;
11
12use Nette;
13use Random\Randomizer;
14use function strlen;
15use const PHP_VERSION_ID;
16
17
18/**
19 * Secure random string generator.
20 */
21final class Random
22{
23 use Nette\StaticClass;
24
25 /**
26 * Generates a random string of given length from characters specified in second argument.
27 * Supports intervals, such as `0-9` or `A-Z`.
28 */
29 public static function generate(int $length = 10, string $charlist = '0-9a-z'): string
30 {
31 $charlist = preg_replace_callback(
32 '#.-.#',
33 fn(array $m): string => implode('', range($m[0][0], $m[0][2])),
34 $charlist,
35 );
36 $charlist = count_chars($charlist, mode: 3);
37 $chLen = strlen($charlist);
38
39 if ($length < 1) {
40 throw new Nette\InvalidArgumentException('Length must be greater than zero.');
41 } elseif ($chLen < 2) {
42 throw new Nette\InvalidArgumentException('Character list must contain at least two chars.');
43 } elseif (PHP_VERSION_ID >= 80300) {
44 return (new Randomizer)->getBytesFromString($charlist, $length);
45 }
46
47 $res = '';
48 for ($i = 0; $i < $length; $i++) {
49 $res .= $charlist[random_int(0, $chLen - 1)];
50 }
51
52 return $res;
53 }
54}