45 lines
1.2 KiB
PHP
45 lines
1.2 KiB
PHP
<?php
|
|
|
|
/**
|
|
* This file is part of the Froxlor project.
|
|
* Copyright (c) 2010 the Froxlor Team (see authors).
|
|
*
|
|
* For the full copyright and license information, please view the COPYING
|
|
* file that was distributed with this source code. You can also view the
|
|
* COPYING file online at http://files.froxlor.org/misc/COPYING.txt
|
|
*
|
|
* @copyright (c) the authors
|
|
* @author Froxlor team <team@froxlor.org> (2016-)
|
|
* @license GPLv2 http://files.froxlor.org/misc/COPYING.txt
|
|
* @package Functions
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* Function randomStr
|
|
*
|
|
* generate a pseudo-random string of bytes
|
|
*
|
|
* @param int $length
|
|
*
|
|
* @return string
|
|
*/
|
|
function randomStr($length)
|
|
{
|
|
if (version_compare(PHP_VERSION, '7.0.0') >= 0) {
|
|
return random_bytes($length);
|
|
} elseif (function_exists('openssl_random_pseudo_bytes')) {
|
|
return openssl_random_pseudo_bytes($length);
|
|
} else {
|
|
$pr_bits = '';
|
|
$fp = @fopen('/dev/urandom', 'rb');
|
|
if ($fp !== false) {
|
|
$pr_bits .= @fread($fp, $length);
|
|
@fclose($fp);
|
|
} else {
|
|
$pr_bits = substr(rand(time()).rand(time()), 0, $length);
|
|
}
|
|
return $pr_bits;
|
|
}
|
|
}
|