Issue with Homebrew php70-timecop

Hi,

I have been able to install php70-timecop sometime ago, but currently it is giving error.

```bash
brew install homebrew/php/php70-timecop&ensp;&ensp;&ensp;&ensp;&ensp;&ensp;&ensp;&ensp;

Updating Homebrew...
Error: homebrew/php was deprecated. This tap is now empty as all its formulae were migrated.
```