Current Path : C:/xampp/htdocs/moodle/lib/horde/framework/Horde/Support/ |
Current File : C:/xampp/htdocs/moodle/lib/horde/framework/Horde/Support/Randomid.php |
<?php /** * 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 2010-2017 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() { $elts = array( uniqid(), mt_rand(), getmypid(), spl_object_hash($this) ); if (function_exists('zend_thread_id')) { $elts[] = zend_thread_id(); } if (function_exists('sys_getloadavg') && ($loadavg = sys_getloadavg())) { $elts = array_merge($elts, $loadavg); } if (function_exists('memory_get_usage')) { $elts[] = memory_get_usage(); $elts[] = memory_get_peak_usage(); } shuffle($elts); /* Base64 can have /, +, and = characters. Restrict to URL-safe * characters. */ return substr(str_replace( array('/', '+', '='), array('-', '_', ''), base64_encode(hash('sha1', serialize($elts), true)) ), 0, 23); } /** * Cooerce to string. * * @return string The random ID. */ public function __toString() { return $this->_id; } }