How do I paginate items queried with mysql but sorted with PHP usort function?

Question

I do a query to fetch all restaurants in my mysql db. After that, I sort these on distance to the user with the PHP usort function, based on their lat/lng coordinates.

What's the most efficient way to paginate the usorted array, without needing to do a query and usort on all items each new paginated page?

Don't think so, I use the Haversine formula to calculate the distance between to pairs of lat/lng coordinates. — Mark de Vries, Nov 20 '12 at 07:26

score 0 · Accepted Answer · edited May 23 '17 at 11:50

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You shouldn't be doing this in PHP. MySQL will do a much better job sorting your results set.

There's a paper here about doing this in MySQL, which is referenced here.

Regardless of which formula you're using, you should be able to do this with MySQL, even if you have to used stored procedures.

edited May 23 '17 at 11:50

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answered Nov 20 '12 at 07:27

Luke

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Thanks! Looks exactly like where I'm looking for! – Mark de Vries Nov 20 '12 at 07:29

How do I paginate items queried with mysql but sorted with PHP usort function?

1 Answers1