How to find dos format files in a linux file system

Question

I would like to find out which of my files in a directory are dos text files (as opposed to unix text files).

What I've tried:

find . -name "*.php" | xargs grep ^M -l

It's not giving me reliable results... so I'm looking for a better alternative.

Any suggestions, ideas?

Thanks

Clarification

In addition to what I've said above, the problem is that i have a bunch of dos files with no ^M characters in them (hence my note about reliability).

The way i currently determine whether a file is dos or not is through Vim, where at the bottom it says:

"filename.php" [dos] [noeol]

Answer 1

How about:

find . -name "*.php" | xargs file | grep "CRLF"

I don't think it is reliable to try and use ^M to try and find the files.