php下的GUID用法，生成随机数

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 一段是地点 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); } } ?>

利用

PHP代码

<?php require_once("guid.class.php"); $Guid = new Guid(); print $Guid->toString(); ?>
  雷同C#下的GUID算法~

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