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