vBulletin and Interspire Email Marketer (SendStudio)

[citricguy]

I'm very new to almost everything I have done below so bare with me.. What I'm trying to do is add a confirmed user account to an Interspire Email Marketer list upon successful+confirmed registrations.

1) The code works 60% of the time.
2) I have no idea why.

Any help with reliability/code or anything would be greatly appriciated. I'm very new to this stuff.

I'm triggering the XML post (ala: http://idn.interspire.com/articles/2...1.html#request ) to add new users after they successfully subscribe.

Plugin hook: registration_activate_process

And here is the plugin code i'm using (with some stuff hidden..)

PHP Code:

$username = $vbulletin->userinfo[username];
$email= $vbulletin->userinfo[email];
$userid= $vbulletin->userinfo[userid];


$xml = "<xmlrequest>
    <username>hidden</username>
    <usertoken>hidden</usertoken>
    <requesttype>subscribers</requesttype>
    <requestmethod>AddSubscriberToList</requestmethod>
    <details>
        <emailaddress>$email</emailaddress>
        <mailinglist>1</mailinglist>
        <format>html</format>
        <confirmed>yes</confirmed>
        <customfields>
            <item>
                <fieldid>1</fieldid>
                <value>$username</value>
            </item>
            <item>
                <fieldid>2</fieldid>
                <value>$userid</value>
            </item>
        </customfields>
    </details>
</xmlrequest>
";

$ch = curl_init('http://www.hidden.com/email/xml.php');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
$result = @curl_exec($ch);
if($result === false) {
    echo "Error performing request";
}
else {
    $xml_doc = simplexml_load_string($result);
    //echo 'Status is ', $xml_doc->status, '<br/>';
    if ($xml_doc->status == 'SUCCESS') {
        //echo 'Data is ', $xml_doc->data, '<br/>';
    } else {
        //echo 'Error is ', $xml_doc->errormessage, '<br/>';
    }
} 


So far it works 60% of the time. All of my tests succeeded in the successful addition of the user into my interspire email marketer list so I know it works, I guess I just want to know if there is something I can do to improve the reliability of the script.