<?php

$listId = Cake_Api::Call('List', 'Create', array(
    'user_key'      => User::getUserKey(),
    'client_id'     => User::getClientId(),
    'name'          => 'Test Import',
    'sender_name'   => 'Lorem Ipsum',
    'sender_email'  => 'lorem@ipsum.com'
));

Cake_Api::call('List', 'SetInfo', array(
    'user_key'      => User::getUserKey(),
    'client_id'     => User::getClientId(),
    'list_id'       => $listId,
    'policy'        => 'accepted'
));

Cake_Api::call('List', 'EditStructure', array(
    'user_key'      => User::getUserKey(),
    'client_id'     => User::getClientId(),
    'list_id'       => $listId,
    'action'        => 'add',
    'field'         => 'firstname',
    'type'          => 'text'
));

Cake_Api::call('List', 'Import', array(
    'user_key'      => User::getUserKey(),
    'client_id'     => User::getClientId(),
    'list_id'       => $listId,
    'record'        => array(
        array('email' => 'test@gmail.com', 'firstname' => 'test'),
        array('email' => 'test+2@gmail.com', 'firstname' => 'test2'),
    )
));

$records = Cake_Api::call('List', 'Show', array(
    'user_key'      => User::getUserKey(),
    'client_id'     => User::getClientId(),
    'list_id'       => $listId
));

Cake_Api::call('List', 'Import', array(
    'user_key'      => User::getUserKey(),
    'client_id'     => User::getClientId(),
    'list_id'       => $listId,
    'record'        => array(
        array('email' => 'test@gmail.com', 'firstname' => 'test-updated'),
        array('email' => 'test+2@gmail.com', 'firstname' => 'test2-updated'),
    )
));

$records = Cake_Api::call('List', 'Show', array(
    'user_key'      => User::getUserKey(),
    'client_id'     => User::getClientId(),
    'list_id'       => $listId
));

print '<pre>';
print_r($records);