Anahkiasen/underscore-php — pull request #35 by ksnyde (2014-06-03 20:35:27+00:00)
Title: Adding intersection() and intersects()

I added the missing `intersection()` function from underscore but also added a handy feature on top which just provides a boolean check on whether two arrays intersect. I find this latter function highly useful but I wasn't precisely sure how best to name it. Let me know if you think it needs a rename.