igorw/conway-php — pull request #5 by camspiers (2014-01-19 02:36:32+00:00)
Title: Avoid the creation of new arrays to do comparison

From:

real	0m5.689s
user	0m5.674s
sys	0m0.013s

To:

real	0m2.154s
user	0m2.140s
sys	0m0.012s