<?php

/**
This Example shows how to Update an A/B Split Campaign via the MCAPI class.
**/
require_once '../mcapi.php';
require_once 'config/config.inc.php';
//contains apikey
$api = new MCAPI($apikey);
$field = "absplit";
$value = "My New Title";
$ab_opts = array();
$ab_opts['split_test'] = 'from_name';
$ab_opts['pick_winner'] = 'manual';
$ab_opts['from_name_a'] = 'David Gilmour';
$ab_opts['from_email_a'] = '*****@*****.**';
$ab_opts['from_name_b'] = 'Roger Waters';
$ab_opts['from_email_b'] = '*****@*****.**';
$retval = $api->campaignUpdate($campaignId, $field, $ab_opts);
if ($api->errorCode) {
    echo "Unable to Update Campaign!";
    echo "\n\tCode=" . $api->errorCode;
    echo "\n\tMsg=" . $api->errorMessage . "\n";
} else {
    echo "SUCCESS!\n";
}
<?php

/**
This Example shows how to Update a regular Campaign via the MCAPI class.
**/
require_once '../mcapi.php';
require_once 'config/config.inc.php';
//contains apikey
$api = new MCAPI($apikey);
$field = "title";
$value = "My New Title";
$retval = $api->campaignUpdate($campaignId, $field, $value);
if ($api->errorCode) {
    echo "Unable to Update Campaign!";
    echo "\n\tCode=" . $api->errorCode;
    echo "\n\tMsg=" . $api->errorMessage . "\n";
} else {
    echo "SUCCESS! \n";
}