// color is still green but prop3 is now set to val3
// track a custom "button click" event
$mp->track("button click", array("label" => "Login"));
// track a custom "logged in" event
$mp->track("logged in", array("landing page" => "/specials"));
// create/update a profile identified by id 12345 with $first_name set to John and $email set to john.doe@example.com
// now we can send them Notifications!
$mp->people->set($user_id, array('$first_name' => "John", '$email' => "*****@*****.**"));
// update John's profile with property ad_source to be "google" but don't override ad_source if it exists already
$mp->people->setOnce($user_id, array("ad_source" => "google"));
// increment John's total logins by one
$mp->people->increment($user_id, "login count", 1);
// append a new favorite to John's favorites
$mp->people->append($user_id, "favorites", "Apples");
// append a few more favorites to John's favorites
$mp->people->append($user_id, "favorites", array("Baseball", "Reading"));
// track a purchase or charge of $9.99 for user 12345 where the transaction happened just now
$mp->people->trackCharge($user_id, "9.99");
// track a purchase or charge of $20 for user 12345 where the transaction happened on June 01, 2013 at 5pm EST
$mp->people->trackCharge($user_id, "20.00", strtotime("01 Jun 2013 5:00:00 PM EST"));
// clear all purchases for user 12345
$mp->people->clearCharges($user_id);
// delete the profile for user 12345
$mp->people->deleteUser($user_id);
// create an alias for user 12345 (note that this is done synchronously)
$mp->createAlias($user_id, "johndoe1");
// track an even using the alias
$mp->track("logout", array("distinct_id" => "johndoe1"));
// manually put messages on the queue (useful for batch processing)
$mp->enqueueAll(array(array("event" => "test"), array("event" => "test2")));
