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Extended Mailchimp hook


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I would like to customize the existing mailchimpsubscribe.php hook and to add support for 2 mailing lists. So, when product #1 is purchased, user to be subscribed to the list #1, and when product #2 is purchased, user to be subscribed to the list #2.


Original script is this:



function hook_mail_chimp_subscribe($vars) {

// ******MailChimp API and List ID******
// Replace XXXX with your API key retrieved from http://admin.mailchimp.com/account/api/
$api_key = "APIKEY";
// Replace XXXX with your list Unique ID obtained by going to http://admin.mailchimp.com/lists/ and clicking on the Settings link for the list. Unique ID found a the bottom of the page
$list_id = "LISTID";

// ******Additional Settings******
// Replace with your datacenter. Retrieved from dashboard URL eg. - https://us2.admin.mailchimp.com/
$datacenter = "us1";
// Set to true if you would like the user to confirm their subscription before being added to your list
$doubleoptin = "false";
// Don't bother changing this unless you really, really....REALLY have to!
$output = "php";

// ******New subscriber information******
$first_name = str_replace(" ", "%20", $vars['firstname']);
$last_name = str_replace(" ", "%20", $vars['lastname']);
   $email = $vars['email'];

   $url = "http://$datacenter.api.mailchimp.com/1.3/?output=$output&method=listSubscribe&apikey=$api_key&id=$list_id&email_address=$email&merge_vars[FNAME]=$first_name&merge_vars[LNAME]=$last_name&double_optin=$doubleoptin";
   $ch = curl_init();
   curl_setopt($ch, CURLOPT_URL, $url);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
   $retval = curl_exec($ch);

   logActivity("Debugging: MailChimp Hook - URL: $url - Response: ".htmlentities($retval));





I don't know how to access the purchased product ID. I tried to add this:


$pid =  $vars['params']['packageid'];

if($pid==1) {
	$list_id = "LIST1ID";
	$api_key = "API1KEY";
	$datacenter = "us9";
	$list_id = "LIST2ID";
	$api_key = "API2KEY";
	$datacenter = "us1";


But it doesn't seems to work. How do I get "packageid" in the ClientAdd hook?



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