array_multisort?
http://php.net/manual/en/function.array-multisort.php
hope that helps
Zoltán Németh
On cs, 2007-02-08 at 14:08 +0000, Dave Goodchild wrote:
> Hi all. I am building an online events directory and as part of the system
> users can search for events by date, category etc.
>
> The logic involved in finding events that match the user-entered dates works
> like so:
>
> 1. we create a range of dates from the start and end dates specified by the
> user
> 2. we then poll the database for any events that encompass or intersect this
> range (using the start_date and end_date fields from events table).
> 3. we then find out the frequency of the event ie weekly, monthly and then
> map out its lifetime.
> 4. we then go through those dates, and for any that match a date in the user
> range, the event on that date (ie all it details, name, venue, date, start
> time etc) is added to an array.
>
> ...etc etc
>
> So we eventually have a large multidimensional array whose elements contain
> arrays of events that fall on a specific date.
>
> I am using usort to ensure the events are sorted by date, but I also want to
> sort by time, for instance if there are five events on one day I want to
> sort them by start_time.
>
> Here's an example of how the event array looks:
>
> element [0] contains an array as follows ('date', 'name' venue',
> 'start_time', 'category...');
> element [1] contains an array as follows ('date', 'name' venue',
> 'start_time', 'category...');
>
> I tried using array_multisort but it didn't seem to do what I wanted. I want
> to sort by date, then start_time if the dates are equivalent.
>
> Any ideas?
>
>
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