PHP Language - form with dynamic questions

Author

form with dynamic questions

toffee

2006-10-06, 9:57 pm

Hi all,

I've a mysql table where i stored a list of questions. My php script
executes a query which yields a different number of questions every time; i
used the loop function to create an input field for each question in the
form; and dynamically referencing each input name with the question number
i.e. question 1 is called q1, question 2 named q2, and so on.
The data is submitted using POST. I then try to retrieve all the answers by
doing a loop and using something like echo '$_POST['q'.$n.'']'; except the
syntax doesnt seem to work.
Can anyone please tell me what am doing wrong - or a better way of doing
this.

Many thanks

T

Jerry Stuckle

2006-10-06, 9:57 pm

toffee wrote:
> Hi all,
>
> I've a mysql table where i stored a list of questions. My php script
> executes a query which yields a different number of questions every time; i
> used the loop function to create an input field for each question in the
> form; and dynamically referencing each input name with the question number
> i.e. question 1 is called q1, question 2 named q2, and so on.
> The data is submitted using POST. I then try to retrieve all the answers by
> doing a loop and using something like echo '$_POST['q'.$n.'']'; except the
> syntax doesnt seem to work.
> Can anyone please tell me what am doing wrong - or a better way of doing
> this.
>
> Many thanks
>
> T
>
>

Why not use an array? Then you can use $_POST["q[$n]"];

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================

Pedro Graca

2006-10-07, 3:57 am

["Followup-To:" header set to comp.lang.php.]
toffee wrote:
> the syntax doesnt seem to work.
> echo '$_POST['q'.$n.'']';

echo $_POST['q' . $n];

or

$index = 'q' . $n;
echo $_POST[$index];

--
File not found: (R)esume, (R)etry, (R)erun, (R)eturn, (R)eboot

Gleep

2006-10-07, 7:00 pm

On Sat, 7 Oct 2006 03:51:19 +0100, "toffee" <toffee@toffee.com> wrote:

>Hi all,
>
>I've a mysql table where i stored a list of questions. My php script
>executes a query which yields a different number of questions every time; i
>used the loop function to create an input field for each question in the
>form; and dynamically referencing each input name with the question number
>i.e. question 1 is called q1, question 2 named q2, and so on.
>The data is submitted using POST. I then try to retrieve all the answers by
>doing a loop and using something like echo '$_POST['q'.$n.'']'; except the
>syntax doesnt seem to work.
>Can anyone please tell me what am doing wrong - or a better way of doing
>this.
>
>Many thanks
>
>T
>

when your query generates a random number of question your are going to loop through the result set
to display each questioin. The name field for each question should be set up in array format like
this

<form>
{... this is loop area
<p> <?= $question ?> </p>
<input type="test" name="answer[]" value="" >

the key thing is the []

then under each question would the the question id in a hidden input like this...

<input type="hidden" name="questionID[]" value="<?= $questionID ?>" >

} // end of loop

<input type="submit" name="Submit" value="Submit" />

</form>

Now when you submit the form you loop through the hidden array to get the values for each mathing
question, fromthere you can figure out what to do with the answers

$answer = $_POST['answer']; // answer array
$questionID = $_POST['questionID']; // questionID array
for($x=0; $x<sizeof($questionID); $x++) {
$userAnswer = $answer[$questionID[$x]];
..... do something with answer and it's associated with the question id $questionID[$q]
}

This is the general idea, read through the logic a few times and you can probably figure it out

toffee

2006-10-12, 6:59 pm

Thanks G and all,

that was exactly what i was trying to do and the route i initially went
down. With the results to every question, i was trying to create a
multidimensional array which i would then append to a mysql table so i could
then run a query to work out how many points the respondant got depending on
his answers.

- i didnt manage to successfully create a multidimension array with each
sub-array holding one row to be appended.
- i tried to write each row to text file and then load it into mysql table -
but i dont have the right privileges
- the only working solution i have right now is to count how many questions
were answered, loop through all of them and run an insert query for every
row

even though its working, it feels a bit long winded. is there maybe a more
efficient way to do this ?

T

"Gleep" <Gleep@Gleep.com> wrote in message
news:b8fgi2hsbik4vq1on5v54sj9hvhrsrbdo5@
4ax.com...
> On Sat, 7 Oct 2006 03:51:19 +0100, "toffee" <toffee@toffee.com> wrote:
>
i[color=darkred]
number[color=darkred]
by[color=darkred]
the[color=darkred]
>
> when your query generates a random number of question your are going to
loop through the result set
> to display each questioin. The name field for each question should be
set up in array format like
> this
>
> <form>
> {... this is loop area
> <p> <?= $question ?> </p>
> <input type="test" name="answer[]" value="" >
>
> the key thing is the []
>
> then under each question would the the question id in a hidden input like
this...
>
> <input type="hidden" name="questionID[]" value="<?= $questionID ?>" >
>
> } // end of loop
>
> <input type="submit" name="Submit" value="Submit" />
>
> </form>
>
>
> Now when you submit the form you loop through the hidden array to get the
values for each mathing
> question, fromthere you can figure out what to do with the answers
>
>
> $answer = $_POST['answer']; // answer array
> $questionID = $_POST['questionID']; // questionID array
> for($x=0; $x<sizeof($questionID); $x++) {
> $userAnswer = $answer[$questionID[$x]];
> .... do something with answer and it's associated with the question
id $questionID[$q]
> }
>
>
> This is the general idea, read through the logic a few times and you can
probably figure it out
>
>
>

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