Add to Secondary Group based on email or IP

[RyanM]

I have seen Add User to Secondary Usergroup Based on the Value of a Custom Profile Field at Reg. but am looking from something similar. I want if someone registers with an email from one of three domains or one of a list of IP address, the user will be added to a secondary usergroup. The original plugin looked like this.

<?xml version="1.0" encoding="ISO-8859-1"?>

<plugins>
	<plugin active="1" product="vbulletin">
		<title>Put User in Secondary Group Based on Custom Profile Field Value</title>
		<hookname>register_activate_process</hookname>
		<phpcode><![CDATA[// Get the value for field 5
        $user = $db->query_first("
			SELECT field5
			FROM " . TABLE_PREFIX . "userfield
			WHERE userid = " . $vbulletin->userinfo['userid'] . "
		");


		if ($user['field5'] == 'yes')
		{
					$membergroupids = $userdata->fetch_field('membergroupids');
		if ($membergroupids)
		{
			$membergroupids = $membergroupids . ", 10";
		}
		else
		{
			$membergroupids = 10;
		}

		$userdata->set('membergroupids', $membergroupids);		}]]></phpcode>
	</plugin>
</plugins>

So, I modified the phpcode in the plugin to not focus on one of the fields in userfield, but to look at email and ipaddress in user:

PHP Code:

$user = $user = $db->query_first("
            SELECT email, ipaddress
            FROM " . TABLE_PREFIX . "user
            WHERE userid = " . $vbulletin->userinfo['userid'] . "
        ");

        $at_sign = strpos($user['email'], "@");
        $ip_array("123.123.123.123","123.123.123.124","123.123.123.125");
        
        if (strpos($user['email'],"domain.com",$at_sign) 
        || strpos($user['email'],"domain2.com",$at_sign) 
        || strpos($user['email'],"domain3.com",$at_sign) 
        || in_array($user['ipaddress'],$ip_array))
        {
            $membergroupids = $userdata->fetch_field('membergroupids');
            if ($membergroupids)
            {
                $membergroupids = $membergroupids . ", 92";
            }
            else
            {
                $membergroupids = 92;
            }
            $userdata->set('membergroupids', $membergroupids);
        } 


I am getting an error when I try to activate a user awaiting email confirmation (the hook).
Fatal error: Call to undefined function: () in /home/user/public_html/forum/register.php(930) : eval()'d code on line 9

Any help?