com_create_guid() function got error on server side but works fine in local using php

You can create GUIDs manually:

function getGUID(){
    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;
    }
}

Usage:

$GUID = getGUID();
echo $GUID;

Follow:

http://guid.us/GUID/PHP

http://php.net/manual/en/function.com-create-guid.php

To extend the partially correct answers above:

taken from http://php.net/manual/en/com.installation.php

"From PHP 5.4.5, COM and DOTNET is no longer built into the php core. You have to add COM support in php.ini"

extension=php_com_dotnet.dll

You must be running PHP version less than 5 else you must be running on a LINUX box as COM is a windows based extension.

Try this script and make sure.

echo function_exists('com_create_guid')
    ? "Yes" +  com_create_guid()
    : "Nope !"
;