51 lines
1.6 KiB
PHP
51 lines
1.6 KiB
PHP
<?php
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/**
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* Copyright (C) 2020 Xibo Signage Ltd
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*
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* Xibo - Digital Signage - http://www.xibo.org.uk
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*
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* This file is part of Xibo.
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*
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* Xibo is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* Xibo is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Xibo. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace Xibo\Helper;
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/**
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* Class Random
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* @package Xibo\Helper
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*/
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class Random
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{
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/**
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* @param int $length
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* @param string $prefix
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* @return string
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* @throws \Exception
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*/
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public static function generateString($length = 10, $prefix = '')
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{
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if (function_exists('random_bytes')) {
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return substr($prefix . bin2hex(random_bytes($length)), 0, $length + strlen($prefix));
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} else {
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$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
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$charactersLength = strlen($characters);
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$randomString = '';
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for ($i = 0; $i < $length; $i++) {
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$randomString .= $characters[rand(0, $charactersLength - 1)];
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}
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return $prefix . $randomString;
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}
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}
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} |