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Posted by tedd on 01/19/06 04:18
HiFi:
> Thanks so much Tedd for the JavaScript. I will keep that snippet for use
>and study to improve my JS skills.
>
>Unfortunately I should have said that I need to stay away from JS in case
>the users have shut that down in their browsers. I know I can detect that
>and have them turn it on but I'm dealing with folks who are not technically
>adept and the survey is long. Given the length of the survey (over 100
>questions) any additional hurdles will further lower the rate of return. So
>I really think I need to do this in PHP though I am open to suggestions
>here.
Okay, no js.
So, let's look at the problem. You have ten rows and ten columns --
that's 100 choices that can be recorded by a simple ten element
array(10).
For example, all radio button groups have ten possibilities. Let's
say radio group-one has radio button three marked -- so, your array
would be:
array(1)=3 (means row one has button 3 selected)
The second row has button 9 checked, the array would be:
array(2)=9 (means row two has button 9 selected)
And so on.
The array has to be filled from the radio buttons. You do that from
taking the values from each group and filling the array accordingly
after the user submits the form. Be careful not to duplicate the
names of the buttons.
After the user clicks "Submit", you'll need to travel through the
array checking each indexed value for duplication.
To do this, start at the first index and if its value is greater than
zero, then compare its value to all other values. If you find a
duplication, then zero the offending value and repeat as necessary.
When you travel all through the entire array using index 1 and find
no duplications, then use index 2 (provided it's greater than zero)
and repeat as necessary with all remaining indexes until the entire
array has been removed of all duplicates. Repeat as necessary. If you
find any duplicates whatsoever, then set a redo-flag=1.
If redo-flag=1, then you repopulate the radio buttons with values
from the array and present the form again to the user with a notice
how to correctly do the survey.
If redo-flag=0, then you have traveled all the way through the array
with all indexes reporting a value greater than 0 and have found no
duplications -- thus, your survey has been correctly reported.
That's the way I would do it -- but, your mileage may vary.
tedd
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