On Aug 24, 2011, at 3:46 PM, Ashley Sheridan <a...@ashleysheridan.co.uk> wrote:
>
>
> Mike Mackintosh <mike.mackint...@angrystatic.com> wrote:
>
>>
>>
>> On Aug 24, 2011, at 11:52, John Black <s...@network-technologies.org>
>> wrote:
>>
>>> On 08/24/2011 03:04 AM, Jason Pruim wrote:
>>>> Wondering what everyone does to prevent multiple form submissions?
>>>> My form is simply getting emailed to my email, and it redirects to a
>> success page when submitted...
>>>> Would it be as simple as doing something with the cache control?
>> Basically I'm trying to avoid someone submitting a form... Then hitting
>> back, and submitting again, then hitting back.... I think you get the
>> idea...
>>>> What do you all do?
>>>> Jason Pruim
>>>
>>>
>>> Hi,
>>> I am using $_SESSION for this. Set a value on the initial page, a
>> timestamp is a good choice, then validate the value on the receiving
>> script and clear the value.
>>>
>>> I like to use a timestamp because it will allow you to deny a comment
>> which took too long to submit.
>>>
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>>
>> I've always tended to stay away from session for that, as when the
>> browser closes/restarts, the page is accessible again.
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>
> I solved this issue with timestamps stored in the db with the submission.
> With each submission, I took all the info that should make it uniqueish, and
> checked if it was near another one. A time limit of 10th seconds worked out
> well. The reason I had the problem was because we were triggering a counter
> on an account from get data (which the browser can request in a way that
> looks like multiple submissions). We should have used post, which didn't have
> this problem though really.
>
> Will you please show an example of using this timestamp methodology?
Thank you
>
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