Dynamically Creating form objects and then checking to see if they excist.

[Arc]

I have this form that creates a certain amount of txt fields depending on what the user slected on the last form. It could be only 2 or as many as 6.

Now, on this next page i have to check and make sure all the txt fields have some text entered into them..BUT i have no way of knowing how many txtfields were created.

So my question is, how do i check the fields that do excist for entries?

Currently i am checking all 6 fields and if any of them are blank it gives an error. But this is a problem if there are only 3 fields..thes user cant fill all 6 fields cause there is only 3.

So would i use Isset to see if the txtfield is even there in the first place. Like

If (isset($txtItem3) == "")
$ErrorMessage = "Field 3 can not be empty";

THanks!😃

[eoghain]

Well you solution is a very acceptable one.

However if you want less code and you have used a naming convention on your text fields (like it looks that youd did) you could do something like this:

for ($i = 1; $i <= 6; $i++) {
   $textfield = "txtItem" . $i;
   if (isset($$textfield)) {
      if ($$textfield == "") {
         echo "Field $i can not be empty.";
      }
   }
}

Using variable variables like this will reduce your code and make it easier to read. Also you'll be less likely to make a typo when cutting and pasting code. And finally if you decide to add another 6 fields you'll only have to change the variable in the loop and everything will continue to work.

[IceD]

Add hidden field to the HTML form.
<input type="hidden" name="numoffields" value="3">