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<?php |
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|
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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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|
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declare(strict_types=1); |
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|
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namespace Nette\Utils; |
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|
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use Nette; |
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|
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|
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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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/** |
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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($charlist); |
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|
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if ($length < 1) { |
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throw new Nette\InvalidArgumentException('Length must be greater than zero.'); |
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} elseif ($chLen < 2) { |
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throw new Nette\InvalidArgumentException('Character list must contain at least two chars.'); |
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} |
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|
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$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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|
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return $res; |
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} |
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} |
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|
