php下的GUID用法，生成随机数

朴灿烈づ我的快乐病毒、 2021-09-12 04:48 401阅读 0赞

guid.class.php

<?php    
    class System    
    {    
        function currentTimeMillis()    
        {    
            list($usec, $sec) = explode(" ",microtime());    
            return $sec.substr($usec, 2, 3);    
        }    
    }    
    class NetAddress    
    {    
        var $Name = 'localhost';    
        var $IP = '127.0.0.1';    
        function getLocalHost() // static    
        {    
            $address = new NetAddress();    
            $address->Name = $_ENV["COMPUTERNAME"];    
            $address->IP = $_SERVER["SERVER_ADDR"];    
            return $address;    
        }    
        function toString()    
        {    
            return strtolower($this->Name.'/'.$this->IP);    
        }    
    }    
    class Random    
    {    
        function nextLong()    
        {    
            $tmp = rand(0,1)?'-':'';    
            return $tmp.rand(1000, 9999).rand(1000, 9999).rand(1000, 9999).rand(100, 999).rand(100, 999);    
        }    
    }    
    // 三段    
    // 一段是微秒 一段是地址 一段是随机数    
    class Guid    
    {    
        var $valueBeforeMD5;    
        var $valueAfterMD5;    
        function Guid()    
        {    
            $this->getGuid();    
        }    
        //    
        function getGuid()    
        {    
            $address = NetAddress::getLocalHost();    
            $this->valueBeforeMD5 = $address->toString().':'.System::currentTimeMillis().':'.Random::nextLong();    
            $this->valueAfterMD5 = md5($this->valueBeforeMD5);    
        }    
        function newGuid()    
        {    
            $Guid = new Guid();    
            return $Guid;    
        }    
        function toString()    
        {    
            $raw = strtoupper($this->valueAfterMD5);    
            return substr($raw,0,8).substr($raw,8,4).substr($raw,12,4).substr($raw,16,4).substr($raw,20);    
        }    
    }    
    ?>

使用

PHP代码

<?php    
    require_once("guid.class.php");    
    $Guid = new Guid();    
    print $Guid->toString();    
    ?>

类似C\#下的GUID算法~

原文地址：[http://www.cnblogs.com/ovliverlin/archive/2008/08/27/932444.html][http_www.cnblogs.com_ovliverlin_archive_2008_08_27_932444.html]

[http_www.cnblogs.com_ovliverlin_archive_2008_08_27_932444.html]: http://www.cnblogs.com/ovliverlin/archive/2008/08/27/932444.html