47 lines
1.0 KiB
PHP
Executable File
47 lines
1.0 KiB
PHP
Executable File
<?php
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/**
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* This file is part of the Nette Framework (https://nette.org)
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* Copyright (c) 2004 David Grudl (https://davidgrudl.com)
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*/
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declare(strict_types=1);
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namespace Nette\Utils;
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use Nette;
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/**
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* Secure random string generator.
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*/
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final class Random
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{
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use Nette\StaticClass;
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/**
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* Generates a random string of given length from characters specified in second argument.
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* Supports intervals, such as `0-9` or `A-Z`.
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*/
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public static function generate(int $length = 10, string $charlist = '0-9a-z'): string
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{
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$charlist = count_chars(preg_replace_callback('#.-.#', function (array $m): string {
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return implode('', range($m[0][0], $m[0][2]));
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}, $charlist), 3);
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$chLen = strlen($charlist);
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if ($length < 1) {
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throw new Nette\InvalidArgumentException('Length must be greater than zero.');
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} elseif ($chLen < 2) {
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throw new Nette\InvalidArgumentException('Character list must contain at least two chars.');
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}
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$res = '';
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for ($i = 0; $i < $length; $i++) {
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$res .= $charlist[random_int(0, $chLen - 1)];
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}
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return $res;
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}
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}
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