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32 lines
1003 B
PHP
32 lines
1003 B
PHP
<?php
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/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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class RandomString {
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/**
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* Generate a random string, using a cryptographically secure
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* pseudorandom number generator (random_int)
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*
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* From https://stackoverflow.com/a/31107425
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*
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* @param int $length How many characters do we want?
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* @param string $keyspace A string of all possible characters
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* to select from
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* @return string
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*/
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public static function generate(int $length, string $keyspace = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'): string {
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$pieces = [];
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$max = mb_strlen($keyspace, '8bit') - 1;
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for ($i = 0; $i < $length; ++$i) {
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$pieces [] = $keyspace[random_int(0, $max)];
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}
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return implode('', $pieces);
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}
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}
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