To detect eyes instead of using the group by clause in php/mysqli

Sorry for the rudimentary question.

(Content) | (Date)
A|September 29, 2015
B | September 29, 2015
C | September 28, 2015

and the database, and I'd like to index the output by date.
What is the best practice to do?

Pagewise

9/29
A
B

9/28
C

I would like to line up with this.