Python hmac is there an alternative in php?

Question

PHP

There is such an algorithm in Python:

sign = hmac.new(str(secret_key))
sign.update(project_id)
sign.update(user)
token = sign.hexdigest()
print token

It seems clear from the php documentation that hash_hmac should return the desired result, but the hashes are different ..
The algorithm is most likely md5, judging by the python documentation, but I can’t get the same hashes.
Is there a way to make php generate the same hash as in python?