<?php ini_set('display_errors', 1); error_reporting(E_ALL); require_once 'CMBase.php'; //-----------------------------INPUT PARAMS--------------------------------------- $apikey = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'; $client_id = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'; $companyName = 'Updated From API'; $contactName = 'Joe Smith'; $emailAddress = '*****@*****.**'; $country = 'United States of America'; $timezone = '(GMT-05:00) Eastern Time (US & Canada)'; //------------------------------------------------------------------------------- $cm = new CampaignMonitor($apikey); //Optional statement to include debugging information in the result $cm->debug_level = 1; //This is the actual call to the method $result = $cm->clientUpdateBasics($client_id, $companyName, $contactName, $emailAddress, $country, $timezone); echo '<br><br>'; print_r($result);