Elastic bobsled with Elasticache: how to get node address in PHP?

I have included the configuration file as described here: http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/customize-environment-resources-elasticache.html

I see that a cache cluster is being created, but my PHP application has no way to get the address of this cluster.

Also, it doesn't look like the Clast Client for PHP ( http://docs.aws.amazon.com/AmazonElastiCache/latest/UserGuide/Appendix.PHPAutoDiscoverySetup.html ) is installed automatically, so evaluate the add-on configuration file, which might install it.