PHP下生成GUID(已测)(转载)

guid.class.php 文件

PHP代码

<?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();
?>