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Posted by M. Sokolewicz on 10/20/07 11:16
Next time, Mukasa, try reading... Robert clearly states that he'd like a
PHP function which TELLS him if the page has been refreshed or not
(thus, "resent"). There are headers sent out that indicate this, and
thus a function like refreshed() would be a shortcut to getting to know
if it has.
He doesn't ask to FORCE a refresh, or to even execute PHP in a browser
(what? how did you get to this...??)
Mukasa Assey Alfred wrote:
>
>
> On Tue, 17 May 2005, Robert Meyer wrote:
>
>> As a last resort, I may have to do that, but that is by no means the
>> preferred method. I want to keep database access to a minimum.
>>
>> I thought by this time this problem would have had a standard
>> solution. It
>> would be nice if PHP had a function like refreshed() so one could do
>> ... if
>> (!refreshed()) { ... } ..., but I guess not.
>>
>
> PHP is a server-side programming language, the problem you are facing is
> a client-side problem. PHP thus would not be able to do browser
> refreshes! sorry! Unless of course you have a PHP enabled browser :-)
>
> Your browser caches the information sent from the form and so long as
> the page is not reloaded..., the variables are still set and submition
> of data may continue indefinately.
>
> Two options,
>
> You may use the php header() funtion for redirection,
> or
> Resort to a client-side reload using a scripting language like
> javascript..., "document.location.href='....';
>
> Assey.
>
>> Thanks for your input.
>>
>> Regards,
>>
>> Robert
>>
>> "Marcus Joyce" <newsletters@online-obsession.com> wrote in message
>> news:428A7964.5000905@online-obsession.com...
>>
>>> Why dont you check that data isnt being duplicated?
>>>
>>> $query = "SELECT auto_col FROM table where col1 = $var1 & col2 = $var
>>> 3.............";
>>> $call_query = mysql_query($query,.......
>>> $query_data = mysql_assoc($call_query);
>>>
>>> if(!$query_data) { do form }
>>>
>>> else echo "information already exists in database";
>>>
>>>
>>> Pierce
>>>
>>> Robert Meyer wrote:
>>>
>>>> Hello,
>>>>
>>>> Scenario:
>>>> 1) User is presented a blank form.
>>>> 2) User fills in form.
>>>> 3) User submits form.
>>>> 4) Record is added to database.
>>>> 5) Back to 1).
>>>> All is fine to here.
>>>> 6) User clicks refresh.
>>>> 7) Another record is added, same data except auto-increment field.
>>>> How do I prevent these last two steps, or at least prevent a record
>>>> from being added when refresh is clicked?
>>>>
>>>> Regards,
>>>>
>>>> Robert
>>>>
>>
>> --
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>>
>>
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