If you want to do spec BDD in PHP phpspec is your guy. These are the slides I've used for an internal presentation of the tool @ ideato. This was part of a regular series called "ideato pills"

1. SpecBDD with
phpspec
Tassi Francesco

2. A php toolset to drive emergent
design by specification.
http://www.phpspec.net/

3. It helps you with
boring stuff

4. New classes…
boOoOred

5. Constructor…
boOoOred

6. New methods…
boOoOred

7. Syntax just make
sense

8. Obvious SUT
You’re testing just one class,
no need to instantiate it.
!
$this is your SUT

9. Natural language
The method your testing

10. Natural language
What it should be doing
-> shouldBe
-> shouldEqual
-> shouldBeEqualTo
-> shouldBeLike
-> shouldThrow

11. Constructor args
let our SUT be constructed
with …

12. Easy mocking
All you need to define a mock
is add it as an argument of
your spec

13. Easy mocking
A method with some
arguments should be called
during the test

14. Easy mocking
A method will return some
value.

15. Easy mocking
Same instance. Of course,
they have the same name and
the same type after all

16. There’s more
magic to come

17. Templates
Configuration
Matchers !
Formatters

18. Let’s go see the
prophet
https://github.com/phpspec/prophecy

19. Prophet
Prophecy is a highly opinionated yet very
powerful and flexible PHP object mocking
framework. Though initially it was created to fulfil
phpspec2 needs, it is flexible enough to be used
inside any testing framework out there with
minimal effort.
Use it !