com_create

Description

string com_create_guid ( void )

Generates a Globally Unique Identifier (GUID) and returns it as a string. A GUID is generated in the same way as DCE UUID's, except that the Microsoft convention is to enclose a GUID in curly braces.

See also uuid_create() in the PECL uuid extension.

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Kristof_Polleunis at yahoo dot com
28-Apr-2005 11:16


A guid function that works in all php versions:



<?php

function guid(){

    if (function_exists('com_create_guid')){

        return com_create_guid();

    }else{

        mt_srand((double)microtime()*10000);//optional for php 4.2.0 and up.

        $charid = strtoupper(md5(uniqid(rand(), true)));

        $hyphen = chr(45);// "-"

        $uuid = chr(123)// "{"

                .substr($charid, 0, 8).$hyphen

                .substr($charid, 8, 4).$hyphen

                .substr($charid,12, 4).$hyphen

                .substr($charid,16, 4).$hyphen

                .substr($charid,20,12)

                .chr(125);// "}"

        return $uuid;

    }

}

echo guid();

?>

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