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Re: Most efficient way to randomize a quiz from a database [message #170565 is a reply to message #170563]

Mon, 08 November 2010 16:26

Captain Paralytic
Messages: 204
Registered: September 2010

Karma:

Senior Member

On Nov 8, 4:08 pm, Mason Barge <masonba...@gmail.com> wrote:
> I'm creating a quiz using PHP 5.3 and MySQL (mysqli). The database has
> about 1000 questions and answers, in categories, and I want to ask 12
> randomly selected questions, one at a time.
>
> Which would be more efficient:
>
> 1) Make one call to the database and build an array, stored in session
> variables, of 12 randomly chosen rows; or
>
> 2) Make 12 requests to the database?
>
> I'm open to other general approaches if anyone has a suggestion I haven't
> considered.
>
> I'd like to avoid reloading the page after every answer and I don't see
> how I could use Ajax with #1. The quiz has to be in PHP because I need to
> generate the final score as a PHP variable, not a javascript variable.

In #1 you can have the query return 12 randomly selected rows.

Regardless of which method you choose, you would store the state
information in a session variable and thus whether you use AJAX or not
is irrelevant.

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[Message index]

		Most efficient way to randomize a quiz from a database By: Mason Barge on Mon, 08 November 2010 16:08
		Re: Most efficient way to randomize a quiz from a database By: Captain Paralytic on Mon, 08 November 2010 16:26
		Re: Most efficient way to randomize a quiz from a database By: Matthew Leonhardt on Mon, 08 November 2010 16:45
		Re: Most efficient way to randomize a quiz from a database By: Mason Barge on Mon, 08 November 2010 18:52
		Re: Most efficient way to randomize a quiz from a database By: Erwin Moller on Tue, 09 November 2010 09:48
		Re: Most efficient way to randomize a quiz from a database By: Matthew Leonhardt on Tue, 09 November 2010 14:55
		Re: Most efficient way to randomize a quiz from a database By: Erwin Moller on Tue, 09 November 2010 16:09
		Re: Most efficient way to randomize a quiz from a database By: Matthew Leonhardt on Tue, 09 November 2010 18:46

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