user intergration on 2 different servers 1 PHP(Gallery) - 1 non PHP(CMS)

Hi all, I know there are a lot of topics about user integration. But I feel I just don't fit in one of the exactly.
I have 2 servers with a application. One is a non-PHP server with a DB running a CMS, the other is the PHP Gallery server.
If I create a user in the CMS I want to be able to create it, at that moment, in Gallery. Is that it possible to do that with 2 different servers? How safe is it/can it be?

I hope someones understand my question and can give me hint about safety of the script.

<?php
$emAppUserId ='something3';
$emAppGroup ='Fotobeheer';
$g2_Config['path'] = dirname(__FILE__) . '/';



require_once( $g2_Config['path'] . 'embed.php');


	$ret = GalleryEmbed::init(array('fullInit' => 'true',
				   				   'activeUserId' => $emAppUserId));
				 
 if ($ret) {

     /* Error! */
     /* Did we get an error because the user doesn't exist in g2 yet? */
     $ret2 = GalleryEmbed::isExternalIdMapped($emAppUserId, 'GalleryUser');
	 
     if ($ret2 && $ret2->getErrorCode() & ERROR_MISSING_OBJECT) {
         /* The user does not exist in G2 yet. Create in now */
		  $args=array('email' => 'test@test.com',
					'fullname' => 'W. Something',
					'password' => '1234567', 
					'username' => 'something3'
			);

				$ret3 = GalleryEmbed::createUser($emAppUserId,$args);
				$ret = GalleryEmbed::done();
				if ($ret3) {
				echo "Gallery user creation ERROR.";
				print $ret2->getAsHtml(); exit;
				} else {
				echo "user successfully created";
				}	

	}	

}else{
	 /*Do nothing*/
	 echo "User already exists";
 }
    if ($ret)
    {
      print $ret->getAsHtml();
    }
	 ?>

ps. the [php] block is not working! Doesn't give a color to the code it just resizes the font to HUGE