If you need it i made a little nuget server with php. It works on apache with mod_rewrite or IIS: http://www.kendar.org/?p=/dotnet/phpnuget :)
It supports security, push, odata queries, gallery and Nuget Package Explorer (https://npe.codeplex.com/) with 5 (five) minutes setup on Apache.
Actually it works on text file db and i'm doing the verifications for the MySql implementation.