This file is a caching proxy script for fetching cloudmade tiles, it is also enhancing the cloudmade call to respect the German Data Protection Act.
It will use your servers ip address and not the ip address of your visitors for accessing cloudmade.com
Place the file in a subfolder of your folder (e.g. /wp-content) and create a folder called "tiles", make the folder read/write able.
Edit the file, pasting your style id, and your cloudmade api key.
If you are using leafletjs, change the tile layer to /wp-content/tileproxy.php?s={s}&z={z}&x={x}&y={y}
This script is not supported. Use it at your own risk.
Feel free to submit issues to the github issue tracker at https://github.com/mrbendig/cloudmade-caching-proxy/issues