102 lines
2.9 KiB
PHP
102 lines
2.9 KiB
PHP
<?php
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/**
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* Zeed Platform Project
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* Based on Zeed Framework & Zend Framework.
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*
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* BTS - Billing Transaction Service
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* CAS - Central Authentication Service
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*
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* LICENSE
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* http://www.zeed.com.cn/license/
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*
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* @category Zeed
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* @package Zeed_Util
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* @subpackage UUID
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* @copyright Copyright (c) 2010 Zeed Technologies PRC Inc. (http://www.zeed.com.cn)
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* @author Zeed Team (http://blog.zeed.com.cn)
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* @since 2010-6-18
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* @version SVN: $Id$
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*/
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class Zeed_Util_UUID
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{
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/**
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* 获取（伪随机生成的）UUID
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*
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* @return RFC 4122 UUID
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* @see http://www.ietf.org/rfc/rfc4122.txt
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*/
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public static function generate()
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{
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$node = isset($_ENV['SERVER_ADDR']) ? $_ENV['SERVER_ADDR'] : null;
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$pid = null;
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if (false !== strpos($node, ':')) {
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if (substr_count($node, '::')) {
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$node = str_replace('::', str_repeat(':0000', 8 - substr_count($node, ':')) . ':', $node);
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}
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$node = explode(':', $node);
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$ipv6 = '';
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foreach ($node as $id) {
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$ipv6 .= str_pad(base_convert($id, 16, 2), 16, 0, STR_PAD_LEFT);
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}
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$node = base_convert($ipv6, 2, 10);
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if (strlen($node) < 38) {
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$node = null;
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} else {
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$node = crc32($node);
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}
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} elseif (empty($node)) {
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$host = isset($_ENV['HOSTNAME']) ? $_ENV['SERVER_ADDR'] : null;
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if (empty($host)) {
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$host = isset($_ENV['HOST']) ? $_ENV['HOST'] : null;
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}
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if (! empty($host)) {
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$ip = gethostbyname($host);
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if ($ip === $host) {
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$node = crc32($host);
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} else {
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$node = ip2long($ip);
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}
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}
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} elseif ($node !== '127.0.0.1') {
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$node = ip2long($node);
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} else {
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$node = null;
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}
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if (empty($node) || true) {
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if (! ($commonConfig = Zeed_Config::loadGroup('common'))) {
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$salt = '1234567890abcdefg';
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} else {
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$salt = $commonConfig['UUID_salt'];
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}
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$node = crc32($salt);
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}
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if (function_exists('zend_thread_id')) {
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$pid = zend_thread_id();
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} else {
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$pid = getmypid();
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}
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if (! $pid || $pid > 65535) {
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$pid = mt_rand(0, 0xfff) | 0x4000;
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}
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list($timeMid, $timeLow) = explode(' ', microtime());
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$uuid = sprintf("%08x-%04x-%04x-%02x%02x-%04x%08x", (int) $timeLow, (int) substr($timeMid, 2) & 0xffff, mt_rand(0, 0xfff) | 0x4000, mt_rand(0, 0x3f) | 0x80, mt_rand(0, 0xff), $pid, $node);
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return $uuid;
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}
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}
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// End ^ Native EOL ^ encoding
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