I have a database containing a field of type datetime (0000-00-00 00:00:00).

The datetime field of each new record is set to the current date and time
when a new record is added. I would like to be able to produce some
statistics on the new records entered within the past 12 hours. I would like
to produce an array of 12 values, each value representing the number of
records with a timedate value within that hour.

I am not sure quite how to explain this properly, so I guess I'll provide an
example to make it a bit clearer, say I have the following database table
'dates' as follows:

id date
0 2001-12-16 13:20:51
1 2001-12-16 15:13:19
2 2001-12-16 15:43:38
3 2001-12-16 15:53:23
4 2001-12-16 16:16:31
5 2001-12-16 16:31:52
6 2001-12-16 17:28:06
7 2001-12-16 18:06:41
8 2001-12-16 21:08:30
9 2001-12-16 21:15:01

and so if the current time was 21:18 when the script was run, I would like
it to output an array with values as follows

I hope this makes a bit of sense to someone who might be able to help me.


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