php - Explode over every other word

Question

Lets say I have a string:

$string = "This is my test case for an example."

If I do explode based on ' ' I get an

Array('This','is','my','test','case','for','an','example.');

What I want is an explode for every other space:

Array('This is','my test','case for','an example.').

The string may have an odd # of words, so the last item in the array may not contain two words.

Anyone know how to do this?

Answer 1

I would look through the results, and concatenate the strings after the fact.