Generating GUIDs under asp/php

What is a GUID?

The globally unique identifier (GUID) is an alphanumeric identifier used to indicate a unique installation of the product. GUIDs are used in many popular software applications, such as Web browsers and media players.

The GUID is formatted as "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", where each x is a hexadecimal number in the range 0-9 or a-f. For example: 6F9619FF-8B86-D011-B42D-00C04FC964FF is a valid GUID value.

Why do you use GUIDs?

No two computers in the world will generate duplicate GUID values. GUIDs are primarily used to assign identifiers that must be unique in a network or system that has more than one node or multiple computers. On Windows platforms, GUIDs are widely used: Registry, class and interface identities, databases, and even automatically generated machine names, directory names, and so on.

Code for generating GUIDs under ASP
<%

Dim Objtypelib

Setōbjtypelib = CreateObject ("Scrīptlet"). TypeLib ")

Response.Write Objtypelib.guid

%>
PHP to generate the GUID to use class.
Guid.class.guid
?
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
{
Functi