divide timestamp into array

Hello,

I have simple problem but I cant find decent solution

I have time start lets say 2014.05.07 and time end 2014.07.22

I want 2d array output:

2014.05.07,  2014.05.31

2014.06.01,  2014.6.30

2014.07.01,  2014.7.22

Thanks for any advices