addLbService.php

<?php
include('softlayer-api-php-client/SoftLayer/SoapClient.class.php');
$apiUser = '';
$apiKey = '';

$cciId = ; // ID of the cloud instance
$loadBalancerId = ; // ID of the VIP


// Create the needed API interfaces
$loadBalancerClient = SoftLayer_SoapClient::getClient('SoftLayer_Network_Application_Delivery_Controller_LoadBalancer_VirtualIpAddress', $loadBalancerId, $apiUser, $apiKey);
$cciClient = SoftLayer_SoapClient::getClient('SoftLayer_Virtual_Guest', $cciId, $apiUser, $apiKey);
$ipAddressClient = SoftLayer_SoapClient::getClient('SoftLayer_Network_Subnet_IpAddress', Null, $apiUser, $apiKey);


// Pull in the existing load balancer configuraiton
$objectMask = new SoftLayer_ObjectMask();
$objectMask->ipAddress;
$objectMask->virtualServers->serviceGroups->services;
$objectMask->virtualServers->serviceGroups->services->ipAddress;
$loadBalancerClient->setObjectMask($objectMask);
$loadBalancer = $loadBalancerClient->getObject();


// Retrieve ID for the CCI's primary IP address
$ipAddressId = $ipAddressClient->findByIpv4Address($cciClient->getPrimaryIpAddress())->id;

// Find the virtual service to modify
$servicePortToModify = 80;
$virtualServerIndex = null;
foreach ($loadBalancer->virtualServers as $index => $virtualServer) {
    if ($virtualServer->port == $servicePortToModify) {
        $virtualServerIndex = $index;
        break;
    }
}

// GOTCHA: remove the recursing object created by the object mask
unset($loadBalancer->virtualServers[$virtualServerIndex]->virtualIpAddress);

// Get the service group to be modified
$serviceGroup = $loadBalancer->virtualServers[$virtualServerIndex]->serviceGroups[0];

// Create a fresh load balancer object with ID
$newLoadBalancer = new stdClass();
$newLoadBalancer->id = $loadBalancer->id;

// Define the new service entry
$serviceGroup->services = array(0 => new stdClass());
$serviceGroup->services[0] = new stdClass();
$serviceGroup->services[0]->enabled = 1;
$serviceGroup->services[0]->port = 80;
$serviceGroup->services[0]->notes = 'test';
$serviceGroup->services[0]->ipAddressId = $ipAddressId;
$serviceGroup->services[0]->groupReferences = array(0 => new stdClass());
$serviceGroup->services[0]->groupReferences[0]->weight = 50;
$serviceGroup->services[0]->healthChecks = array(0 => new stdClass());
$serviceGroup->services[0]->healthChecks[0]->healthCheckTypeId = 21; // DEFAULT

// Attach the new service entry to the new load balancer object
$newLoadBalancer->virtualServers = array();
$newLoadBalancer->virtualServers[$virtualServerIndex]->serviceGroups = array();
$newLoadBalancer->virtualServers[$virtualServerIndex]->serviceGroups[0] = $serviceGroup;

try {
    $loadBalancerClient->editObject($newLoadBalancer);
} catch (Exception $e) {
    print $e->getMessage();
}