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[edit] Last updated: Fri, 17 May 2013

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com_create_guid

(PHP 5)

com_create_guidグローバルユニーク ID (GUID) を生成する

説明

string com_create_guid ( void )

グローバルユニーク ID (GUID) を生成します。

GUID は DCE UUID と同様の方法で生成されますが、Microsoft の 規約により、GUID が中括弧で囲まれるという点が異なります。

返り値

GUID を文字列で返します。

参考

  • PECL uuid 拡張モジュールの uuid_create()



add a note add a note User Contributed Notes com_create_guid - [2 notes]
up
1
Alix Axel
2 years ago
The phunction PHP framework (http://sourceforge.net/projects/phunction/) uses the following function to generate valid version 4 UUIDs:

<?php

function GUID()
{
    if (
function_exists('com_create_guid') === true)
    {
        return
trim(com_create_guid(), '{}');
    }

    return
sprintf('%04X%04X-%04X-%04X-%04X-%04X%04X%04X', mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(16384, 20479), mt_rand(32768, 49151), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535));
}

?>

The output generated by the sprintf() and mt_rand() calls is identical to com_create_guid() results.
up
1
Kristof_Polleunis at yahoo dot com
8 years ago
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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