/usr/share/php/Horde/Support/Randomid.php is in php-horde-support 2.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* Class for generating a 23-character random ID string. This string uses all
* characters in the class [-_0-9a-zA-Z].
*
* <code>
* $id = (string)new Horde_Support_Randomid();
* </code>
*
* Copyright 2010-2013 Horde LLC (http://www.horde.org/)
*
* @author Michael Slusarz <slusarz@horde.org>
* @category Horde
* @license http://www.horde.org/licenses/bsd BSD
* @package Support
*/
class Horde_Support_Randomid
{
/**
* Generated ID.
*
* @var string
*/
private $_id;
/**
* New random ID.
*/
public function __construct()
{
$this->_id = $this->generate();
}
/**
* Generate a random ID.
*/
public function generate()
{
$r = mt_rand();
$elts = array(
$r,
uniqid(),
getmypid()
);
if (function_exists('zend_thread_id')) {
$elts[] = zend_thread_id();
}
if (function_exists('sys_getloadavg') &&
$loadavg = sys_getloadavg()) {
$elts = array_merge($elts, $loadavg);
}
shuffle($elts);
/* Base64 can have /, +, and = characters. Restrict to URL-safe
* characters. */
return substr(str_replace(
array('/', '+', '='),
array('-', '_', ''),
base64_encode(pack('H*', hash('md5', implode('', $elts))))
) . $r, 0, 23);
}
/**
* Cooerce to string.
*
* @return string The random ID.
*/
public function __toString()
{
return $this->_id;
}
}
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