How to create a port with uncompressed distfile?

[Torsten Zuehlsdorff]

Hello,

i'm trying to create a port for PHPUnit4. Its served as a single .phar 
file (thats an PHP archive file).

I only need to download this file and move it into /usr/local/bin.

But i do not know how to tell the Makefile, that it should not try to 
decompress the .phar-file.

At the moment i also have to use DISTFILES, because i do not know how to 
teach the makefile, that it should use .phar instead of .tar.gz.

Any advice?

Thank you very much!
Torsten