com_create_guid Generate a globally unique identifier

string com_create_guid ( void )

Generate a globally unique identifier (GUID)

Generates a Globally Unique Identifier (GUID).


The phunction PHP framework (http://sourceforge.net/projects/phunction/) uses the following function to generate valid version 4 UUIDs:



<?phpfunction 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.