Chris Wright published this tutorial on how to load server-generated Tilemap data into your Phaser game at run-time:
"Phaser is a fantastic framework for creating games with web technologies. There are many features built in that make creating games a breeze. One of my favourites is Tilemaps. Whether you're developing a side-scrolling platformer or an epic turn-based RPG, you'll likely need to take advantage of Tilemaps to render your level. I'd like to touch briefly on how to work with them and then demonstrate how to leverage an API to dynamically serve level information."